i couldnt pass on a deal with a 45 cal. cva firebolt. for deer in my state you cant go smaller than a 44 cal on deer. dont know why?. im sure a 40 cal or 357 in a sabot would do the job . i really didnt want to go all lead conicals because of the mess of cleaning. the 45 bullet knurling info would be great.wonder why you cant get a snap on base like a power belt.