well my hunting pard shot his antalope with the 155 scenar. the lope got all of the 3200 fps from the 300 h&h. the shot can at about 50 yrds. after a 1/2 mile stalk in the fog, we came over a ridge and he was close enough to hit with a rock.
caliber size hole going in and a 1.5" exit, the jacket fell out of the exit hole during field dressing. it was peeled back all the way to the base, and looked like a tsx. no core was left.
it resulted in a dead antelope. the old "bang flop" if you will. we will continue using the scenar because a sample of one "ain't" enough to make a good evaluation.
now in need to try them in my 30-06 and 308