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Being one of the easiest people in the industry to talk to, a secret this guarded certainly sparked my curiosity, so I made sure to order a test sample. Subscribe to the free newsletter and do not miss any news or promotions. Weve been quite pleased with IMR 8208 XBR as a Varget alternative. For example, variation in velocity does NOT appear to be linear across the full range of temperatures. I tried 4166 and my groups opened up. SUBSCRIBE TO OUR NEWSLETTER TO STAY UP ON THE LATEST. I use in 243 Win and 6.5 CM. The main features of the Enduron series are copper fouling eliminator, insensitivity to temperature changes, ideal loading density and being environmentally friendly. Find load data for IMR 7977 Enduron propellant by clicking the button "Loads for this Powder".More about this powder:IMR Enduron 7977 is a slower burn rate in the Enduron family. Each of these are still favorites with handloaders today! Plain cartridges, in contrast, turned in an average extreme spread of 51 fps. So if your goal is first-shot hits and you may shoot in a variety of conditions you should care about temperature stable powders. IMR Enduron 4166 is a versatile, match-grade propellant, with the fastest burn rate in the Enduron line. Share the post "Guide to IMR Enduron Powders: 4166, 4451, 4955, 7977, 8933". This is a true magnum propellant yielding outstanding performance in 6.5-300 Weatherby, 264 Win Mag, 28 Nosler and 300 Rem Ultra Mag, among other cartridges. These new powders should compete directly with the Hodgdon Extreme Series, which gives shooters more temp-stable powder options to consider. IMR claims that Enduron powders are not sensitive to temperature changes. This demand lead to an incredible 2.5 billion pounds of smokeless propellants being manufactured by DuPont for Allied Forces in World War II. Loading density is perfect for magnums, nicely filling the case at maximum charges, contributing to superb uniformity and accuracy. For a better experience, please enable JavaScript in your browser before proceeding. This powder is comparable to Hodgdon H4831. For more information and IMR 4166 LOAD DATA visit imrpowder.com or check the 2015 Hodgdon Annual Manual. Optimal load density - Enduron powders provide optimal load density, assisting in maintaining low standard deviations in velocity and pressure, a key feature for top accuracy. Shooters looking for readily-available alternatives to hard-to-find extruded powders should definitely check out the Enduron line-up. Share the post "Guide to IMRs Enduron Powders What You Need to Know", Powder Valley Inc. (PVI) now has the new IMR 4166 powder. You can find that here: http://precisionrifleblog.com/2016/06/19/powder-temp-stability-hodgdon-extreme-vs-imr-enduron/, Share the post "Powder Temp Stability IMR Enduron vs. H4350 and Varget". It provides top performance in big game cartridges such as 25-06, 280 Remington and 300 Winchester Magnum. This website uses cookies to ensure the best experience possible. So they would likely show much larger swings than what these four top-performing powders showed. As with all load development, reference a credible reloading manual, then start at the minimum and work up in small increments. IMR 7977 is comparable to Hodgdon H1000. That provided two sets of velocity numbers. Sep 25, 2010 . You are using an out of date browser. For info on other IMR powders, visit www.imrpowder.com. IMRs press release states: IMR 4166 [has] a perfect burn speed for cartridges like the 308 Win/7.62mm NATO, 22-250 Remington, 257 Roberts and dozens more.. PRBs test team also noticed other interesting trends in the data. However, Alliants relatively new Reloder 16 is an extremely temp-stable powder, with a burn rate that is a close match to H4350. Importantly, it seems to be a good substitute for unobtanium Varget powder. I went to the IMR site and it takes you to hodgdon's loading site. Reloading for 223/556 Service Rifle Competition (NRA/CMP bullseye . The new powder line-up comes in three flavors: 4166, 4451 and 7977. IMR 4166 is an extruded stick powder. 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; of Varget. Was looking for an equivalent powder from H4895 when I ran into the 4166. I was planning to switch to 4166 for my .308, but it seems that it has also become nearly impossible to source. Hodgdon Powder Co., distributors of Hodgdon, IMR, and Winchester powders, says that: The new IMR Enduron Technology powders will be available at dealers in early 2015 in 1-pound and 8-pound containers. For more information and Enduron LOAD DATA visit imrpowder.com or check the 2015 Hodgdon Annual Manual. Access from your Country was disabled by the administrator. I bought all three. })(); To comment on a post, click Post Title or "Comment" Link. More about this powder: IMR Enduron 4166 is a versatile, match-grade propellant, with the fastest burn rate in the Enduron line. 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; h4895 Reduced Rifle Load. Find load data for IMR 4831 propellant by clicking the button "Loads for this Powder".More about this powder:IMR 4831 has a slightly slower burn rate speed than IMR 4350. When we are sold out, we are sold out. For more information, go towww.P65Warnings.ca.gov. Posted by Christopher Brown on Apr 19th 2022. var _gaq = _gaq || []; I'm very happy with this powder. The 223 is the most common round. The IMR brand was created under the DuPont Corporation. 17 reviews. IMR 4166 in .223. My factory sierra high 2576 Well, Im done Adulting for Today and Tomorrow. I didn't want to like this stuffI figured I was likely buying marketing hype for $31/lb at my LGS. Ive heard some say 4166 is similar to 4064, which I haven't used or have on hand currently. Sign up to get updates and access to exclusive promotions. This is an all-new extruded powder with a burn rate similar to Hodgdon Varget. This propellant performs comparably to Hodgdon H4350 but charge weights are materially different. Below you will see today's round robin from 45.0 to 46.4 grains of 4166. Find load data for IMR 4166 Enduron propellant by clicking the button "Loads for this Powder". Thanks, Was looking for an equivalent powder from H4895 when I ran into the 4166. Very consistent velocity, quality powder, not so good on powder throw due to it being a stick powder. WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. I can imagine you might have a little more difficulty with case volume and fill ratio due to kernel size. The results were very interesting, to say the least. This website uses cookies to ensure the best experience possible. You may not reproduce original text or photos without advanced permission in writing. worst groups at .5 moa most groups around the .3 moa mark. You can see Hodgdon H4350 had the least variance in muzzle velocity, with just 25 fps over the 115 swing in temperature! Find load data for IMR 4166 Enduron propellant by clicking the button "Loads for this Powder".More about this powder:IMR Enduron 4166 is a versatile, match-grade propellant, with the fastest burn rate in the Enduron line. It acts a whole lot like Varget, but is much easier to find. ALL Bulletin content is copyrighted, 2023 AccurateShooter.com. Naturally the next step was to combine the two for a new line of powders. IMR Enduron 4166 is a versatile, match-grade propellant, with the fastest burn rate in the Enduron line. Other than that , great job, thanks. Load data should be forthcoming pretty soon. So far IMR4166 has worked great for me in the .243 Winchester with light bullets, the .257 Roberts with 75-100 grains bullets, .308 Winchester with 150's and 168's, the .303 British, 8x57 and .45-70 with "low pressure" loads. IMR 4166 Enduron Find load data for IMR 4166 Enduron propellant by clicking the button "Loads for this Powder".More about this powder:IMR Enduron 4166 is a versatile, match-grade propellant, with the fastest burn rate in the Enduron line. Thread starter cornhusker; Start date Sep 18, 2017; Forums. Find load data for IMR 4166 Enduron propellant by clicking the button "Loads for this Powder".More about this powder:IMR End. This is a true magnum propellant yielding outstanding performance in 300 Winchester Magnum, 7mm Remington Magnum and 338 Lapua, among other cartridges. Precision shooters will find an Enduron option well-suited to most of the popular precision cartridge types. The test was designed to quantify the temperature stability of Hodgdon H4350 and Varget powders compared to IMRs Enduron line of powders, specifically IMR 4166 and 4451. We do not take backorders and our Tech Services team cannot take orders via email or phone. Past breakthroughs have brought us the extreme extruded line that gives consistent performance regardless of ambient temperature, and more recently they have brought us CFE technology that deters and reduces copper fouling. In 2003, Hodgdon Powder Company acquired the IMR brand bringing these prestigious powders under the umbrella that also includes Hodgdon, Winchester and GOEX. IMR now offers four Enduron powders that cover a broad range of burn rates. Find load data for IMR 4227 propellant by clicking the button "Loads for this Powder".More about this powder:IMR 4227 is a medium burn speed, magnum pistol propellant. Share the post "Powder Temp Stability: IMR Enduron vs. Hodgdon Extreme". msinc Grab some at your nearest dealer, or for more information, contact IMR Powder Company; Tel. Find load data for IMR 7828 SSC propellant by clicking the button "Loads for this Powder".More about this powder:IMR 7828 SSC is a magnum rifle powder with exactly the same burn rate as standard IMR 7828 and uses the same data. Anyone seen/tried this combo? IMR now offers four Enduron powders that cover a broad range of burn rates. Load data for the new IMR 4166 was taken from Hodgdons 2015 Annual reloading manual, and in increments of .3 grains or less, loads were worked up from 24.0 through 25.1 grains of IMR 4166. Site Notices. PrecisionRifleBlog.com (PRB) recently published results from a field test PRB conducted to quantify the temperature stability of the popular Hodgdon H4350 and Varget powders and compare those to IMRs new Enduron line of powders, specifically IMR 4166 and 4451. When we are sold out, we are sold out. I haven't seen any Hornady loads in the manual using 4166. so I am thinking till powder does come available, load one or 2 levels under Max for a 223 into the 556 cases. Any gunpowder required by handloaders can be sourced through these brands. It is an extruded powder with a perfect burn speed for cartridges like 308 Winchester, 7.62mm NATO, 22-250 Remington or 257 Roberts, among other cartridges. IMR 7977 is the slowest burn rate Enduron Technology powder. Here on Ultimate Reloader you can count on a LOT of AR-15 content coming over the next year: everything from reloading .223/5.56, to hunting, a lot more with suppressors, and some custom AR-15 rifle action! Then Try IMR 4166 Powder", A couple seasons back, PrecisionRifleBlog.com (PRB) published a significant field test of powder temperature stability. CL 2.005 Hodgdon Varget was the second least temperature sensitive powder in this test, with 46 fps of variance in muzzle velocity between temperatures of 25 F and 140 F. IMR 4166 performed very similar to Varget, and proved to be fairly insensitive to large swings in temperature. Fired from My Rock River Arms National Match upper, these rounds consistently fetch accuracy in the .75 to 1.25 MOA area. IMR recommends always consulting www.IMRReloading.com for the most accurate, up-to-date data. IMR 7977 is a slower burn rate in the Enduron family. We are engineers, reloading enthusiasts and operate one of the most powerful ballistics calculators. 44gr 4166 Or maybe have QuickLoad data? Find load data for IMR 8208 XBR propellant by clicking the button "Loads for this Powder".More about this powder:IMR 8208 XBR is an accurate-metering, super short-grained extruded rifle powder was designed expressly for match, varmint, and AR sniper cartridges. ALL THE LOAD DATA YOU'LL EVER NEED ALL IN ONE PLACE! Full Member. this stuff is not affected temp at all. PRBs testers talk about those things, provide a few other insightful views of the data, and discuss tools that can help you manage temp/muzzle velocity in the field in their full post. However, to up the ante the Enduron line also utilizes copper fouling reducing technology to help keep your bore free of the hard to remove copper. It is the perfect burn speed for cartridges such as .308 Win, 7.62mm NATO, 22-250 Rem and 257 Roberts. The IMR 4166 shows loads for a 69 hpbt. FPS low 2735 high 2789 PRBs testers explain the full set of equipment and steps in their loading process in the Full Test Report. At 600 yds, the POI with 4166 loads was about 1.2 MOA higher than when using 43.2 gr. It is expected to perform well in the .308 Winchester and in 6mm cartridges running the heavier (95-107gr) projectiles. As a medium burn speed propellant, XBR is ideally suited for cartridges like the 223 Remington/5.56mm, 308 Winchester/7.62mm NATO and the 6mm PPC. Precision shooters will find an Enduron option well-suited to most popular precision cartridge types. Or maybe have QuickLoad data? _gaq.push(['_trackPageview']); Once they had a couple dozen rounds loaded with each powder, they went and shot them with each powder at 25 F, 65 F, and 140 F. The muzzle velocity of each shot was recorded using both a LabRadar Doppler Radar and a MagnetoSpeed Chronograph. Today, only the newest reloading fuels can exceed that with a 55-grain bullet in the commercial .22-250. Load data for 50 loads in caliber 7 x 57 with .284 | 139gr . Sign up to get updates and access to exclusive promotions. VISIT THE RDC WHITE HOTS White Hots 50/50 is a 50 Caliber, 50 grain pellet for muzzleloaders. ga.src = ('https:' == document.location.protocol ? var _gaq = _gaq || []; Give it a try if you've already purchased it. Shooters will find IMR 8208 XBR yields max velocities and 'tack driving' accuracy. Love the copper fouling eliminator makes cleaning a breeze, Posted by Paul rosenkranz on Nov 9th 2021. These new powders should compete directly with the Hodgdon Extreme Series, which gives shooters more temp-stable powder options to consider. A versatile, match-grade propellant, IMR 4166 is comparable to Hodgdon Varget. Villain Weapon Systems ATPIAL-C EFL -- Enhanced Class 3R Performance Available Now from TNVC! Learn more about Enduron powders at www.enduronimr.com. Average extreme velocity spread was only 19 fps for 15 Sierra 142-grain MatchKing bullets fired from prepared cases filled with precisely weighed IMR-4166 charges. Using Hodgdon's online Reloading Data Center I find IMR 4166 listed as an appropriate powder for several 223 loads, from 50 grains bullets all the way up to 90 grain bullets. A Meopta MeoStar 1.710x riflescope was mounted to ensure an optimum sight picture. CL 2.005 2. I have heard the same criticism from other forum members. IMR now offers five (5) Enduron powders: IMR 4166, IMR 4451, IMR 4955, IMR 7977, and IMR 8133. . I've had good luck with 8208 with 77gr SMK's and 69gr Nosler Competition Customs Hoon Rating - 100% 1 0 0 Joined Mar 2, 2013 Messages It is the perfect burn speed for cartridges such as .308 Win, 7.62mm NATO, 22-250 Rem and 257 Roberts. They both love it. 44gr 4166 I much prefer IMR 8208 XBR for the 223. flyfisher117 Professional Milk Jug Hunter. The pelletized form makes for faster reloads with pre-formed charges that easily drop down the barrel and is easy to pack without the need for measures or funnels. I'm using this in my Tikka CTR 223 under 73 gr Berger BT target bullets. Be Alert: Publisher cannot be responsible for errors in published load data. Address: xxl-reloading.com, Gartenweg 9, 83661 Lenggries, Germany. The main features of the Enduron series are copper fouling eliminator, insensitivity to temperature changes, ideal loading density and being environmentally friendly. 4166 is the fastest burning powder, for cartridges like .223 Remington and .308 Winchester. The main features of the Enduron series are copper fouling eliminator, insensitivity to temperature changes, ideal loading density and being environmentally friendly. When placed and configured optimally, the LabRadar can measure muzzle velocity with +/- 0.1% accuracy, according to the manufacturer. IMR 4166 possesses the fastest burn rate in the Enduron lineup. It is an extruded powder with a perfect burn speed for cartridges like 308 Winchester, 7.62mm NATO, 22-250 Remington or 257 Roberts, among other cartridges. It is an extruded powder with a perfect burn speed for cartridges like 308 Winchester, 7.62mm NATO, 22-250 Remington or 257 Roberts, among other cartridges. The rifle was placed on the 50 yard line and supported both fore and aft by sandbags. The manual allows for stiffer charges, but at 25.1 the load begins to compress. First ladder turned out great! IMR 4166 was released a few years ago as a temperature insensitive powder that is expected to replace 4064. If a pistol says Magnum, IMR 4227 is the choice for true magnum velocities and performance. IMR recommends always consulting www.IMRReloading.com for the most accurate, up-to-date data. One member wrote: in my 6.547 IMR 4166 gives speeds and accuracy pretty much exactly the same as Varget. And other shooters have observed reduced copper fouling with Enduron series powders, so IMRs Enduron anti-fouling chemistry does seem to work. It is an extruded powder with a perfect burn speed for cartridges like 308 Winchester, 7.62mm NATO, 22-250 Remington or 257 Roberts, among other cartridges. CLICK HERE to Read Full Powder Temperature Stability Test on Precision RifleBlog.com. It was less accurate than 4 other powders. Anyway, I like the 4166! Really like this powder, the accuracy it produces is amazing I will lots more if I can find it. Most powders arent specially formulated to be temperature stable. $25.45 3, e-mail Hornady and the powder mfg. This is a true magnum propellant yielding outstanding performance in 6.5-300 Weatherby, .264 Win Mag, 28 Nosler and .300 Rem Ultra Mag, among other cartridges. Whether youre reloading for the first time or an experienced reloader who desires elite powder, IMR is a company that should be on your radar. Find load data for IMR 3031 propellant by clicking the button "Loads for this Powder".More about this powder:A medium burn speed propellant with many uses, IMR 3031 has long been a favorite of 308 Match shooters using 168-grain match bullets. $182.75. very consistent in .243 shooting 65gr vmax and 3550 fps. Taking the rifle back to the workbench for a cleanup proved the claimit had virtually no copper fouling, as proven by the absence of a blue hue in the exiting patch soaked in Sweets 7.62 bore solvent. Powder Valley Inc. (PVI) and Midsouth Shooters both have plenty of IMR 4166 in stock right now. Newtosavage Dec 9, 2020 #9 ericwh Well Known Rokslider Joined Mar 9, 2017 Messages 479 Location PA Powder Temp Stability: Hodgdon Extreme vs. IMR Enduron - 24hourcampfire Previous Thread Next Thread Print Thread Hop To BP-B2 IC-A B3 IC-B B4 RR1-22 Who's Online Now 828 members ( 10Glocks, 12344mag, 007FJ, 1911a1, 1100mag, 95 invisible), 2,340 guests, and 1,313 robots. The IMR series of handloading powders were the only choice to wring full performance out of rifle calibers. This is a true magnum propellant yielding outstanding performance in .300 Winchester Magnum, 7mm Remington Magnum and .338 Lapua Magnum. In modern type guns, 4166 IMR Enduron Powder is a viable powder. It also offers good load density and meters reasonably well. Sierra load data for over 95 Berger bullets in over 65 calibers with all suitable powders on the market. 5 rounds shot Find load data for IMR 4350 propellant by clicking the button "Loads for this Powder".More about this powder:IMR 4350 is a medium- to slow-burn rate propellant and is the number one choice for the new short magnums, both Remington and Winchester versions. It is an extruded powder and is perfect for cartridges like 270 Winchester, 30-06 or 300 Winchester Short Magnum, among others. If this is true, these powders should prove popular, particularly IMR 4166 which seems to be in the Varget/Reloder 15 burn-rate range. Find load data for IMR 4955 Enduron propellant by clicking the button "Loads for this Powder".More about this powder:IMR Enduron 4955 is a versatile, match-grade propellant with a mid-range burn speed that is in between IMR4451 and IMR7977. 5 rounds shot I live in florida and shoot the same load all year. . Moving on, the individual loads were fired and the barrel was allowed to cool between each group. For example, IMR 4166 is a good replacement for Hodgdon Varget (commonly used in the .223 Rem, 6mmBR and .308 Win), while IMR 4955 is a fine substitute for H4831 (favored by F-Open shooters for the .284 Win and 7mm WSM cartridges). (function() { Environmentally friendly - Enduron technology is environmentally friendly, crafted using raw materials that are not harmful to the environment. The Hide Armory. ga.src = ('https:' == document.location.protocol ? Where to Find IMR 4166 Powder Really like this powder, the accuracy it produces is amazing I will lots more if I can find it. The technology in IMRs Enduron line of powders provides four very important qualities that enhance both in-gun and downrange performance. then consider IMR 4166. Mag. For a better experience, please enable JavaScript in your browser before proceeding. It is an extruded powder with a perfect burn speed for cartridges like 308 Winchester, 7.62mm NATO, 22-250 Remington or 257 Roberts, among other cartridges. IMR 4955 is a medium burn speed powder, falling in between IMR 4451 and IMR 7977 in burn speed. Cant Find Varget for Sale? Choose from a variety of powders for everything from small-caliber ammo to magnum rifle cartridges in both 1 lb canisters and 8 lb jugs. I do not see it listed for 40 grain bullets. spitzer boat tail & imr 4166, .223 rem. IMR 4166 Enduron Love the copper fouling eliminator makes cleaning a breeze. We need to get back to the good old days! Reduced Rifle Loads. Not a brand to rest on its laurels, IMR continues to develop new powder formulas that are increasingly insensitive to weather and temperature changes, have improved burn speeds, and contain additives that remove copper bullet jacket fouling. Clean and inspect the cases, lube and full-length resize/decap, clean, and inspect them again. bolt reload data with 65 gr. Temperature change stability the Enduron line is insensitive to temperature changes. http://www.hodgdonreloading.com/data/rifle, Hoping to find a fat girl to slurp my eel, http://optimalchargeweight.embarqspace.com/, http://www.northeastshooters.com/vbse-a-little-help-with-target-analysis-for-OCW. IMR offers a modern line of powders with Enduron Technology which is also marketed to have extreme temperature stability. temperature stable too. IMR recommends always consulting www.IMRReloading.com for the most accurate, up-to-date data. I'm very happy with this powder. In fact, E. I. duPont arrived in America in 1800 determined to make an improved gunpowder and, by 1802, was producing gunpowder in a new plant along the Brandywine River in Wilmington, Delaware (this plant morphed into what is today the GOEX brand of black powder). When I hit that node It's going to be great. _gaq.push(['_trackPageview']); Some of our Forum members have reported excellent results with IMR 4166 in cartridges that work with Varget, such as the 6mmBR, 6 Dasher, 6.547 Lapua, and .308 Win. The same increase in temperature also causes the nitrocellulose-based powder inside the cartridge to burn at a higher rate, producing approximately four times the Point of Impact (POI) shift than just air temperature alone. Find load data for IMR 4064 propellant by clicking the button "Loads for this Powder".More about this powder:IMR 4064 is a medium-range burn speed powder and is one of the most versatile propellant in the IMR line, used for 223 Remington, 22-250 Remington, 220 Swift, 6mm Remington, 243 Winchester Super Short Magnum, 308 Winchester, 338 Winchester Magnum, and the list goes on and on. _gaq.push(['_setAccount', 'UA-6323545-2']); JavaScript is disabled. IMR 4166 powder? I did the usual load development testing and found that 43.0 gr. In this post, I've got some great highlights including the LEE . Shooter's Reference Load Data for .223 Remington .223 Remington - Published Manufacturer Loading Data Shellholders: Hornady #16 Lee #4 Lyman #26 RCBS #10 Recipe Type: Rifle 55,000 PSI STANDARD SAAMI COMMERCIAL SPECIFICATIONS Pistol CUSTOM LONG THROAT Reduced Load Bullet Weight: ALL 30 gr 34 gr 35 gr 36 gr 40 gr 42 gr 43 gr 45 gr 50 gr 51 gr 52 gr I shot a 4.125", 10-shot group at 600 yds - well under 1 MOA and slightly better than my Varget loads, although they were close enough that I attribute the difference to the shooter. Its loading density is perfect for magnum cartridges and contributes to superb uniformity, yielding outstanding performance in 300 Winchester Magnum, 7MM Remington Magnum and .338 Lapua Magnum. I understand this is an old thread, but want to reply anyway, 243 75gr V-Max loads using StaBall or IMR 4166. Third, Enduron powders are designed for optimal load density. ARCHIVED. Hodgdon Extreme Series powders have attracted quite a fan base, with over 90% of the top shooters in the Precision Rifle Series choosing to run one of those powders. IMR 8208 XBR is accurate, clean-burning, and offers good velocity. So, I'd use it for loads listed by Hodgdon. We continue to prioritize our shipments to our traditional sales channels to maximize powder availability at retailers. var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); We are engineers, reloading enthusiasts and operate one of the most powerful ballistics calculators. IMRs press release provides these descriptions of the new Enduron propellants: IMR 4166 is the first in the series of Enduron propellants. You are using an out of date browser. Thats because a change in temperature can affect the trajectory or flight path of the bullet in two well-known ways: 1. This propellant performs comparably to Hodgdon Varget but charge weights are materially different. Clearly, the competitor's 'choice' and the Varmint Hunter's 'dream powder.'. Enduron powders are formulated to reduce fouling and to be stable across a wide temperature range. Key: Admin , Global Mod , Mod RR2/3-22 UDG-IP OAL 2770 Sierra Case Re: IMR 4166 in .223. IMR4166-08: IMR 4166 8 LBS. Every week of WW II, as many munitions were used as in all of WW I. IMR Enduron 4166 is a versatile, match-grade propellant, with the fastest burn rate in the Enduron line. The main features of the Enduron series are copper fouling eliminator, insensitivity to temperature changes, ideal loading density and being environmentally friendly. Copper fouling should be minimal, allowing shooters to spend more time shooting and less time cleaning a rifle to retain accuracy. Is there a different load data site? . This propellant performs comparably to Hodgdon Varget but charge weights are materially different. CC 300 BLK ($53.49 per box of 20), Law Tactical Gen 3-M AR Folding Stock Adapter, 2022 Editors Choice Award Winning Silencer Central Banish Backcountry Suppressor. We continue to prioritize our shipments to our traditional sales channels to maximize powder availability at retailers. It may be that if I did more load development I could close the gap. IMR 7977 is comparable to Hodgdon H1000. The maxorder quantity of any powder SKU is, https://shop.hodgdon.com/sites/www/files/2022-04/2022-IMR%20Endurons%20SDS.pdf, https://shop.hodgdon.com/sites/www/files/2020-08/sell-sheet-imr-enduron-final.p. IMR 4166: This newer propellant produced by General Dynamics in Canada had the best temperature insensitivity and may be the best substitute for Varget across a wide temperature range with 77 to 80 grain bullets. With Varget so hard to find, if IMR 4166 proves accurate (and available) we might see many .308 Win shooters make the switch. IMR recently released a new line of powders with Enduron Technology which is also marketed to have extreme temperature stability. Reviews can only be submitted while being logged in. Sounds familiar! The main features of the Enduron series are copper fouling eliminator, insensitivity to temperature changes, ideal loading density and being environmentally friendly. Will purchase more. When I approached Chris Hodgdon with the question Does it stop copper from fouling or remove it with each shot? with a smirk he responded Its a proprietary formula. Then Try IMR 4166 Powder, Powder Temp Stability IMR Enduron vs. H4350 and Varget, http://precisionrifleblog.com/2016/06/19/powder-temp-stability-hodgdon-extreme-vs-imr-enduron/, Powder Temp Stability: IMR Enduron vs. Hodgdon Extreme, Guide to IMRs Enduron Powders What You Need to Know, Powder Valley has new IMR 4166 Powder in Stock, IMR Introduces New Enduron Powders: 4166, 4451, 7977. They list loads for Sperry SP and Barnes TTSX in 55gr weights. No reviews found. This Enduron series powder is temp-stable and accurate. This powder is comparable to Hodgdon H4831. The technology in IMRs Enduron line of powders provides four very important qualities that enhance both in-gun and downrange performance. IMR is an acronym for Improved Military Rifle. They also produce specialty rounds designed for competition shooting events like . Choosing 4166, I decided to use it in place of my usual choice of Varget in a known accurate cartridge and rifle combination. When will Enduron powders appear on dealers shelves? forum.accurateshooter.com/threads/imr4166-loads-for-223.4053707/, Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.0.0 Safari/537.36.