6.5 Grendel barrel Length?????

[NugginFutz]

lazyengineer...only problem with 1000fpe at 300yds is you 800fpe below the threshold bullet manufacturer design their bullets.

CC - lazyengineer was talking Foot Pounds of Energy at those distances. The manufacturers are talking Feet Per Second when setting their minimum expansion criteria, not energy. The Grendel doesn't make 1800 FPE at the Muzzle, let alone at 300 yards.

Your not going to get that by burning the bulk of your powder charge in the air outside the muzzle. If your velocity is all over the map you will string your shots vertically and the BC of your bullet changes as the slows down. So some shots will drift more than other with the exact same hold!

I'm also curious where you get the idea that the 12" barrels are burning most of the powder beyond the muzzle. Would you mind please citing your source for this claim?