high velocity round that explodes on impact is exactly 
Not really,  You  want a round that is going to give at least 8-10inches of penetration, that is were the  60 grain and up load's  really shine rememebr we need to get through  layers of heavy clothing and reach to vitals   i personally use the either 62 winchester psp load
 the 75-77 grain Bh/hornaday loads
and some from federal.    
 we also may have to shoot through some type of intermeditate barriers as well