I bought my dad an Excalibur axium crossbow about 15yrs ago. The thing is huge and a pain to lug around but at his age we're not investing in a new $2000 rig. Anyways, ive been having him shoot 150gr slick trick grizz tricks. Hes taken a lot of deer with the rig but also wounded too many. He takes very ethical shots, broadside and within 20yds. The heads seem to be inconsistent. I suggested mechanicals this year. Any suggestions for a 150gr options? And they need to be simple to handle without deploying and adjusting spring clips, rubber bands, etc. Thanks guys