Originally Posted By: MPFDTitle says it all. I'm interested. I have one that doesn't want to seem to break 2600 fps without ruining brass.
In my 12.5” arp 6.8 barrel I was seeing over 2700 I thought. With the 90 grain federal xm68gd. It was Saudi or Jordanian military contract overrun ammo if I remember right. That barrel setup in an ar15 pistol, with PRI magazines, and xm68gd ammo has become my travel companion. Packs a good punch in a small lighter weight package. It comes along in the side by side, and in the vehicle wherever we travel, close or across the nation.