I have taken deer,bear andboar in fairly good numbers with PRB almost all with a home built copy of a 35.5 inch barreled 54 cal Hawken,the load it shoots best and that I use for most game was 120gr RS a 535 ball and a ticking patch. This was after trying every cal from 40 to 62 the most effective cal. it will drop deer on the spot a good part of the time with a good heart or double lung hit. Lee