Mother In Law Cottage $12,800, Shannon Aikau Net Worth, Articles I

IMR Enduron 4166 is a versatile, match-grade propellant, with the fastest burn rate in the Enduron line. 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. worst groups at .5 moa most groups around the .3 moa mark. Share the post "Guide to IMRs Enduron Powders What You Need to Know", Powder Valley Inc. (PVI) now has the new IMR 4166 powder. Improved Military Rifle IMR 3031 Improved Military Rifle IMR 4064: 5.56 x 45 mm: Accurate 2495 VihtaVuori N135 VihtaVuori N140: Hodgdon CFE 223 Hodgdon H 335 Improved Military Rifle IMR 8208 XBR VihtaVuori N530 VihtaVuori N540: 5.6 x 50 Magnum: Improved Military Rifle IMR 4064 Winchester 748: 5.6 x 57: Improved Military Rifle IMR 4320: 5.7 x 28 . IMR 7977 is comparable to Hodgdon H1000. PRBs testers explain the full set of equipment and steps in their loading process in the Full Test Report. UPS has officially stopped shipping guns? Reviews can only be submitted while being logged in. This helps attain low ES/SD in velocity and pressure, which translates to improved long-range accuracy and tight verticals. Mag. Share the post "Powder Valley has new IMR 4166 Powder in Stock". CL 2.005 of 4166 in Peterson SRP brass topped with 168 gr SMK's seated 0.010" off gave me great performance. IMR 7977 performs comparably to Hodgdon H1000 but charge weights are materially different. It is a true magnum cartridge propellant with outstanding performance in such cartridges as the .300 Winchester Magnum, 7mm Remington Magnum, .338 Lapua and more. Third, Enduron powders are designed for optimal load density. For this reason, the IMR brand powders truly are Legendary products. 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. Minuteman. The 6.5 responded well to the precisely weighed powder charges in carefully prepared cases. I loaded 23.5 gr in Lapua brass with no trouble using a 10" drop tube: http://www.xxicsi.com/powder-funnel.html when enduron works it is often same hole shooting. Thanks, T.B. 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. These new powders should compete directly with the Hodgdon Extreme Series, which gives shooters more temp-stable powder options to consider. This is an all-new extruded powder with a burn rate similar to Hodgdon Varget. var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; IMR 4166 + 55gr V-Max in 223 Rem tailbon3 Jan 19, 2017 Help Support Long Range Hunting Forum Become a supporting member tailbon3 Well-Known Member Joined Aug 24, 2009 Messages 84 Jan 19, 2017 #1 I'm looking for some load data for the 55gr V-Max in 223 Remington with IMR 4166. 4166 is the fastest burning powder, for cartridges like .223 Remington and .308 Winchester. IMR now offers five (5) Enduron powders: IMR 4166, IMR 4451, IMR 4955, IMR 7977, and IMR 8133. IMR 4451 is a mid-range burn speed powder, ideally suited for cartridges such as .270 Winchester, .30-06 and 300 Winchester Short Magnum. (SEE: Temperature Effects On Zero on KestrelMeters.com.). Working up a good hunting load with the 4166 Enduron and the Hornaday 150 gr GMX bullets for my 308. Please help us to improve and report any suggestions via our contact form. bolt reload data with 65 gr. The technology in IMRs Enduron line of powders provides four very important qualities that enhance both in-gun and downrange performance. OAL 2770 Sierra Case * All prices incl. The Enduron Technology powders are available in one-pound (1 lb) and eight-pound (8-lb) containers from quality reloading retailers. The main features of the Enduron series are copper fouling eliminator, insensitivity to temperature changes, ideal loading density and being environmentally friendly. So, I'd use it for loads listed by Hodgdon. IMR offers a modern line of powders with Enduron Technology which is also marketed to have extreme temperature stability. 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. . A versatile, match-grade propellant, IMR 4166 is comparable to Hodgdon Varget. IMR is bringing out a new series of advanced-formulation extruded powders. When will Enduron powders appear on dealers shelves? IMR Enduron 4166 is a versatile, match-grade propellant, with the fastest burn rate in the Enduron line. The rifle was placed on the 50 yard line and supported both fore and aft by sandbags. I paid $159.00 for 8# Varget at Shooters last time I was up there. The IMR series of handloading powders were the only choice to wring full performance out of rifle calibers. A versatile, match-grade propellant, IMR 4166 is comparable to Hodgdon Varget. Subscribe to the free newsletter and do not miss any news or promotions. var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); 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. Is there a different load data site? It is an extruded powder and provides top performance for big game cartridges like 25-06, 270 Winchester, 280 Remington and 300 Win Mag, among other cartridges. 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 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. IMR 4955 is a medium burn speed powder, falling in between IMR 4451 and IMR 7977 in burn speed. IMR 4166 in .223. Share the post "Powder Temp Stability: IMR Enduron vs. Hodgdon Extreme". This website uses cookies to ensure the best experience possible. From the 17 Remington to the 243 Winchester to the 375 H&H Magnum, accuracy and performance are excellent. Generally no two rifles will like the same exact load. 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. CL 2.005 This propellant is ideally suited for many mid-range burn speed cartridges. Cant Find Varget for Sale? 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. 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. 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. (5.56 x 45 NATO) .223 WSSM .224 Valkyrie .224 Weath. 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. When we are sold out, we are sold out. 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. 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. First ladder turned out great! With Varget so hard to find, if IMR 4166 proves accurate (and available) we might see many .308 Win shooters make the switch. Most powders arent specially formulated to be temperature stable. I have had good luck with 4166 in .223 bolt rifles. I've only seen a handful of load data for IMR 4166 and 223, it was 69 Sierra and 77 Sierra. Find load data for IMR 8133 Enduron propellant by clicking the button "Loads for this Powder".More about this powder:IMR Enduron 8133 is the slowest burn rate in the Enduron family. Choosing 4166, I decided to use it in place of my usual choice of Varget in a known accurate cartridge and rifle combination. .1 to .2 gr accuracy. A versatile, match-grade propellant, IMR 4166 is comparable to Hodgdon Varget. Address: xxl-reloading.com, Gartenweg 9, 83661 Lenggries, Germany. First, these powders all feature chemistry that reduces copper fouling. However, Alliants relatively new Reloder 16 is an extremely temp-stable powder, with a burn rate that is a close match to H4350. IMR 7977 is comparable to Hodgdon H1000. The Hide Armory. It is available right now at Midsouth Shooters and Powder Valley in both one-pound and 8-pound containers: For more information and LOAD DATA visit IMRpowder.com and navigate to the Hodgdon Reloading Center. They list loads for Sperry SP and Barnes TTSX in 55gr weights. Posted: 7/2/2021 8:19:25 PM EST. I did the usual load development testing and found that 43.0 gr. This powder is comparable to Hodgdon H4831. works great in many cartridges with good to great accuracy. Will purchase more. To be able to use the full range of Shopware 6, we recommend activating Javascript in your browser. - 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. for 223. Loading density is perfect for magnums, contributing to superb uniformity. 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. 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 It may not display this or other websites correctly. In today's shooting you can clearly see the scatter that centers at 45.5 and the obvious OCW at 46.2. On the official Hodgdon/IMR burn rate chart, IMR 4166 is between H4895 and Varget. 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. An acronym for. 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. Address: xxl-reloading.com, Gartenweg 9, 83661 Lenggries, Germany. That provided two sets of velocity numbers. Choose a IMR powder and find the respective load data for it. Give it a try if you've already purchased it. Load data for 50 loads in caliber 7 x 57 with .284 | 139gr . Full Member. The top shooters in the PRS and veteran long-range shooters in other disciplines have learned to value a temperature-stable powder. 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. IMR 4166 is one of the new Enduron family of propellants. 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. When placed and configured optimally, the LabRadar can measure muzzle velocity with +/- 0.1% accuracy, according to the manufacturer. First used in battle in 1805 by United States naval forces against pirates off the coast of Algiers, DuPont supplied more than 80% of Allied Forces powder needs in World War I. . it's a bit bulky when pouring into the 223 case. In another study, IMR 4166 was identified as the best replacement for Varget between 61F and 103F for .308 F-TR rifles. These short-grain, extruded powders will deliver temperature insensitive quality while keeping copper residue to a minimum. Love the copper fouling eliminator makes cleaning a breeze. 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 Shooters has been keeping it around $20/lb if you buy in quantity. 3, e-mail Hornady and the powder mfg. Access from your Country was disabled by the administrator. Plain cartridges, in contrast, turned in an average extreme spread of 51 fps. First run tomorrow. Find load data for IMR 4166 Enduron propellant by clicking the button "Loads for this Powder". 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. 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. They also produce specialty rounds designed for competition shooting events like . Many F-Open competitors are now using Reloder 16 with considerable success. Very happy with the results. IMR recommends always consulting www.IMRReloading.com for the most accurate, up-to-date data. The weight of a kernel of 4166 was almost double the weight of a kernel of H4895, and they were clearly larger. I have enough on hand to last for a while, but when I found some IMR 4166 available, I decided to try it for my MPA .308. _gaq.push(['_trackPageview']); For a better experience, please enable JavaScript in your browser before proceeding. For a better experience, please enable JavaScript in your browser before proceeding. of Varget. I went to the IMR site and it takes you to hodgdon's loading site. The components in question make up my service rifle load in .223 and they are Hornadys 55 grain V-max bullet seated into a Lake City brass case at an OAL of 2.270 and ignited with a Wolf Small Rifle Primer. Be Alert: Publisher cannot be responsible for errors in published load data. This propellant performs comparably to Hodgdon Varget but charge weights are materially different. ga.src = ('https:' == document.location.protocol ? Tried their 7977 in a magnum rifle and it had same accuracy as H1000. I'm looking for some load data for the 55gr V-Max in 223 Remington with IMR 4166. Sierra load data for over 95 Berger bullets in over 65 calibers with all suitable powders on the market. I'm using this in my Tikka CTR 223 under 73 gr Berger BT target bullets. FPS low 2735 high 2789. OAL 2770 Sierra Case They are suitable for a wide variety of cartridges, from small varmint cartridges all the way up to the .338 Lapua Magnum. Shooters looking for readily-available alternatives to hard-to-find extruded powders should definitely check out the Enduron line-up. Moving on, the individual loads were fired and the barrel was allowed to cool between each group. You are using an out of date browser. We need to get back to the good old days! It is the perfect burn speed for cartridges such as .308 Win, 7.62mm NATO, 22-250 Rem and 257 Roberts. Find load data for IMR 4451 Enduron propellant by clicking the button "Loads for this Powder".More about this powder:IMR Enduron 4451 is a versatile, match-grade propellant with a mid-range burn speed in the Enduron line. 44gr 4166 You may not reproduce original text or photos without advanced permission in writing. IMR Enduron 4166 is a versatile, match-grade propellant, with the fastest burn rate in the Enduron line. IMR 7977 is the slowest burn rate Enduron Technology powder. Powder Valley Inc. (PVI) and Midsouth Shooters both have plenty of IMR 4166 in stock right now. The manual allows for stiffer charges, but at 25.1 the load begins to compress. The Hodgdon powder company is world renowned for introducing revolutionary technology to the reloader. That means swings in ambient outside temperature can affect your internal ballistics, which will directly affect your muzzle velocity, which will change your bullets trajectory. For info on other IMR powders, visit www.imrpowder.com. Be sure to enter theNES/MFS March Giveaway ***Taurus G3c***. 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. Clean and inspect the cases, lube and full-length resize/decap, clean, and inspect them again. Thanks, Was looking for an equivalent powder from H4895 when I ran into the 4166. Please enter your login details below. This propellant performs comparably to Hodgdon H4350 but charge weights are materially different. 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. This website uses cookies to ensure the best experience possible. I went online and found data published by the manufacturer, so I worked with that for my 30 06. IMR 7977 has the slowest burn rate among the Enduron Technology powders. I use this powder in my 6mm dasher bench gun. At 600 yds, the POI with 4166 loads was about 1.2 MOA higher than when using 43.2 gr. Powders include IMR I have a pound of 8208 XBR for 223 development, haven't gotten round tuit yet. $49.99 - $357.99 4.48 17 reviews IMR Enduron 4166 is a versatile, match-grade propellant, with the fastest burn rate in the Enduron line. 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. Fired from My Rock River Arms National Match upper, these rounds consistently fetch accuracy in the .75 to 1.25 MOA area. 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. 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. var _gaq = _gaq || []; the accuracy is the same as varget but the velocity is a bit higher with a couple of 10ths less powder. Menu & Links If this is true, these powders should prove popular, particularly IMR 4166 which seems to be in the Varget/Reloder 15 burn-rate range. IMR 8133 performs comparably to Hodgdon Retumbo but charge weights are materially different. Share the post "IMR Introduces New Enduron Powders: 4166, 4451, 7977". Copper fouling reduction these powders contain an additive that drastically reduces copper fouling in the gun barrel. IMR states that IMR 4166 is a versatile, match grade propellant. The folks at PrecisionRifleBlog.com meticulously loaded 6.547 Lapua ammo with each powder using some of the best equipment available. 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. WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. })(); To comment on a post, click Post Title or "Comment" Link. Comprehensive load data for IMR 4166 Enduron reloading powder und technical specifications for this propellant. Varget was always my go-to powder for .308 and .223, but anyone who reloads knows that Varget is virtually unobtainable now. For more information, go towww.P65Warnings.ca.gov. Thanks, Posted by Phillip Jackson on Aug 1st 2021. Loading density is perfect for the very large magnums, including the 6.5mm and 7mm magnums. The 4166 seemed interestingit matched my motorcycle jacket, but none of my reloading manuals had any data for it (it's that new). Such loads are marked with an asterisk in the data to show where standard 7828 will not fit. The IMR 4166 Powder may be on the slow side but will be interesting with heavier bullets. Sounds familiar! bolt reload data with 65gr. The 223 is the most common round. The responsible reloader always errs on the side of caution, so I decided to stop there. Find load data for IMR 4895 propellant by clicking the button "Loads for this Powder".More about this powder:Originally a military powder featured in the 30-06, IMR 4895 is extremely versatile as a medium burn speed propellant. . The Rifle: Savage 10fcp, 24" 5r, accustock .308 Win, Vortex Viper PST 4-16 Target distance: 100 yards Shot off front and rear sand bags from a bench This is a true magnum propellant yielding outstanding performance in 300 Winchester Magnum, 7mm Remington Magnum and 338 Lapua, among other cartridges. The main features of the Enduron series are copper fouling eliminator, insensitivity to temperature changes, ideal loading density and being environmentally friendly. IMRs press release provides these descriptions of the new Enduron propellants: IMR 4166 is the first in the series of Enduron propellants. Thread starter cornhusker; Start date Sep 18, 2017; Forums. I didn't want to like this stuffI figured I was likely buying marketing hype for $31/lb at my LGS. I hope to get some time on the new bull barrel AR. * All prices incl. Improved Military Rifle IMR 4166 Improved Military Rifle IMR 4320 Improved Military Rifle IMR 4350 Improved Military Rifle IMR 4451 Improved Military Rifle IMR 4831 Improved Military Rifle IMR 4895 Improved Military Rifle IMR 8208 XBR Improved Military Rifle SR 4759 Ramshot Big Game Ramshot TAC Ramshot X-Terminator Shooters World AR PLUS Sounds familiar! 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; 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. this stuff is not affected temp at all. 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. ALL Bulletin content is copyrighted, 2023 AccurateShooter.com. $40.99 - $270.99. For those who ask.I am obviously loading for a 556 NOT a 223. otherwise why mention I would be using only cases marked as 556! Precision shooters will find an Enduron option well-suited to most of the popular precision cartridge types. I do not see it listed for 40 grain bullets. Varmint shooters with small-bore cartridges love it. I was planning to switch to 4166 for my .308, but it seems that it has also become nearly impossible to source. Naturally the next step was to combine the two for a new line of powders. You may not reproduce original text or photos without advanced permission in writing. These new powders should compete directly with the Hodgdon Extreme Series, which gives shooters more temp-stable powder options to consider. Love the copper fouling eliminator makes cleaning a breeze, Posted by Paul rosenkranz on Nov 9th 2021. Select 223 Remington, check off your weights, select IMR, then 4166 I was able ti find a load for two different 55s, a 69, and a 75. With no pressure signs up to 45.8 grains of 4166 I decided to push further and see what I could get. Weve been quite pleased with IMR 8208 XBR as a Varget alternative. very consistent in .243 shooting 65gr vmax and 3550 fps. PRBs test team also noticed other interesting trends in the data. 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. Will purchase more. Very consistent velocity, quality powder, not so good on powder throw due to it being a stick powder. 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. I bought all three. Reloading 223/ 5.56 for the AR-15 with IMR 4166 30-06JOHN, GUNS AND RELOADING 1.86K subscribers 2.8K views 1 year ago I reload .223/ 5.56 for the AR-15 using a powder not popular, IMR. To me that says Gebby got it right long ago. Re: IMR 4166 in .223. You can see Hodgdon H4350 had the least variance in muzzle velocity, with just 25 fps over the 115 swing in temperature! This allows up to 4% more powder space in the case and in many loads yields more velocity than standard 7828. Picked up a lb of this stuff to do a little testing with, see if it compares to Varget for accuracy in .223. Reloading for 223/556 Service Rifle Competition (NRA/CMP bullseye . .225 Win. The illuminated reticle made it very easy to see on the black target, and honestly was the first time I have ever had used the feature (now it may be hard to go back). CLICK HERE to Read Full Powder Temperature Stability Test on Precision RifleBlog.com. It is available right now at Powder Valley in both one-pound ($25.45) and 8-pound ($182.75) containers: IMR4166-01: IMR 4166 1 LB. Share the post "Guide to IMR Enduron Powders: 4166, 4451, 4955, 7977, 8933". We place limited powder inventory for sale on a regular basis on our website. .1 to .2 gr accuracy. IMR 4166 powder? 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. It is expected to perform well in the .308 Winchester and in 6mm cartridges running the heavier (95-107gr) projectiles. Trail Boss is based on new technology that allows very-high loading density, good flow through powder measures, stability in severe temperature variation, and, most importantly, additional safety to the handloader.