I've only used the 286 Interlock in Hornady factory load, listed at 2370 fps, which is apparently the modern standard for the 9.3x62 in 286-grain factory ammo, both in the U.S. and Europe. The biggest animal I took with it was a cow nilgai, about the size of a cow elk, say 450 pounds. The shot wasn't far, I'd guess somewhere around 125 yards, and the cow was almost facing me, quartering just a little. I put the bullet just inside the nearest shoulder, and it exited around the rear of the ribcage on the opposite side, leaving an exit hole about the diameter of my thumb. It performed pretty much perfectly at that velocity, which may be what the bullet's designed for.
Nilgai are supposed to be pretty hard to kill, but the cow crow-hopped about 10 feet sideways and fell over dead.
“Montana seems to me to be what a small boy would think Texas is like from hearing Texans.” John Steinbeck
