A neighbor of mine has passed and his daughter asked if I was interested in looking at his firearms to see if I was interested in buying some. He has a nice 46" barrel .45 caliber flintlock rifle. Judging by the stock it appears to be some sort of Southern Mountain Rifle. My question is could this rifle be bored out to a rifled .54 caliber or is this too big ? I figured it could go to .50 no problem but all of round balls are .530 that I shoot in my T/C Scout so I figured I would attempt to keep all of rifles streamlined on one caliber. I think .45 is just a tad undersize for deer even though its legal and has been used in rifles since the colonies. Thanks for all replies, I dont mind stupid answers since this is probably a stupid question.