05-17-2019, 10:34 PM
stanc Wrote:The accuracy standards you cite are for a bolt-action sniper rifle with 24" barrel, firing match grade ammo. It would seem reasonable to use those standards as a basis for a 6.5 Grendel sniper rifle, but they are totally inapplicable to determining the maximum effective range of a service grade 6.5 Grendel carbine with 16" barrel, firing service grade ball ammo.
You need to use the standards for 5.56 M855A1 Ball. The weight range of hypothetical EPR bullets has practical limits of around 95 gr at the low end, to about 125 gr at the high end. Considering the probable BC and MV of such loads, the max effective range seems likely to not differ greatly from that of 5.56 ball ammo.
Interesting that you mentioned a grendel sniper rifle, I didn't find much about this on the forum (search term "grendel sniper" ). Might be worthy of a new thread. A Ruger Precision® Rifle in 6.5 grendel would be sweet!