ORIGINAL: .243Heartshot

Hey guys, what is the smallest caliber you would use for deer hunting these are mine, .22 at 20 yards or less, .222, .223, .22-50, .243. I have not and will not use anything bigger than a .243, personally I have been out with a .22 when money is tight so did all my uncles. father , grandma, etc. Remember in Tennessee where we live it was legal at the time and during hunting season. But we were all very good shots being able to hit a nickel at 50 yards with open sights.