04-24-2012, 03:58 AM
LRRPF52 Wrote: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.
That's impressive. I didn't think 10 could do it, that's why I said 10-inch-ish -- a 12.5" barrel with a brake (better still: suppressor) would do nicely though.
