04-23-2012, 06:06 PM
OldCannon Wrote:I'm confused. Are you saying you can get 2800 FPS from a 10"-ish barrel with 95gr VMAX? Seems like you'd get a lot of collateral damage, as the concussive blast would kill anybody near the shooter
Honestly though, I've never really considered the Grendel in a SBR configuration. Would you get complete gas expansion to drive that kind of FPS?
You can get 2700fps with the 100gr NBT out of a 16" barrel, and the 100 NBT has a lot of bearing surface-way more than the 95gr VMAX. David Fortier has been getting much higher velocities than expected with his 12" Grendel, even with 123gr AMAX.
With a beefier bolt, you could easily push the 85gr-95gr pills very fast out of Grendel SBR's. I don't think a 10" barrel is the best length, but I do like 11.5" and 12.5" AR15 SBR's.