So, hunters for the past few hundred years have killed elk with a .54 round ball but a 300gr SST won't do them in???

If they are that tough, how the heck do you eat them???

You might want to try the 300gr Barnes MZ, I know they are tough as all get out...But if your dad's gun likes those 300SST with 90grs of Pyrodex, I'd stick with it...

I've killed a dozen or so whitetails with the 250SST and never had to track one...My load was 90grs of Pyrodex R-S...