If you aren't heating up a barrel as fast as we do in high power comps, you can get a little more life out of the barrel with double based powders. There is a little more velocity with them, but the barrels don't last nearly as long. As the name implies, this Extreme Extruded propellant was developed for precision. I stay away from double based powders (Alliant and VV 5 series) with my F-class rifles due to throat erosion. Velocities with the BR were in the same range as similar charges with Varget. It is not as temp insensitive as some of the others, but is a good backup that isn't hard to find usually. I bought an 8 pounder during the last Varget "crisis", and worked up good loads for a BRX and BR with 105 hybrids. It looks like these guys still have some 1 pounders if you want to try it: It is in the same burn rate area as R15, Varget and VVN140. Another powder to check out would be IMR 4320. It is a bit too fast burning to get good velocities with the heavier bullets, in my experience. 22-250 Remington with 52 grain jacketed projectileCHARGE WEIGHTVELOCITY34. I use it for a 65 grain bullet in a varmint rifle. It is similar in burning rate to AR2206, butcan be faster depending on the calibre used.TYPICAL LOAD. I just settled in with RL15 and didn't look back, I would however like to retest with Benchmark in this case.Ĩ208 is a good powder with the lighter bullets (65-80 grain) in the 6 BR. Powder type: Benchmark Powder charge weight: 25.0 grains OAL: 2.25' Primer: CCI 400 and Rem 7.5 Firearm tested in: 20' HBAR, 1/8 twist Chrono data (Avg, ES, SD): Unknown Slightly better groups with the Rem 7.5s, but theyre not always available. More about this powder: As the name implies, this Extreme Extruded propellant was developed for precision cartridges. Sent the bolt to Gre-Tan and that was the end of that problem. Find load data for Hodgdon Benchmark propellant by clicking the button 'Loads for this Powder'. Ive used tons of it and 25grs behind just about any 55gr bullet shoots just like the 25gr load you posted above. Turned out it wasn't the powder it was the rifle, the fireing pin hole was to large and allowing the primer material to flow back and creating the pierced primer. I moved away from Benchmark thinking that it was the problem. Alliant AR-Comp, Alliant Reloder-7, Alliant Reloder-10x, Hodgdon Benchmark, Hodgdon CFE BLK, Hodgdon H322. For me Benchmark was the best powder I ever shot in the 6BR, trouble was I was piercing primers in the test rifle. When I first started shooting the 6 BR several years ago I tested Benchmark a lot. I believe that in my experiance that a lot of Benchrest shooters are now using RL15, it is my go-To powder in both the Dasher and the 6BR. It has gotten so bad that some complettly have to redo there load work up when just changing lots of Varget. I shoot a lot of F-Class as well as Benchrest, today while there are folks useing Varget it is problematic in that Varget varies widely from lot to lot.
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