today i shot buck with Nosler ballistic tip 140gr useing a T/C encore pistol 7-30 waters at 91yd that buck went down like a ton of brickes hit him ,my self i like them ,that would make it number 4 and counting,the other 3 were shot at 106 &110yds only 1 ran about 20yds and all shots were passthrou with smalish exet holes about 1 in. in size.so it must have something to do with speed