Just a matter of opinion- I use "special" ammo in all my vintage doubles. Even a 3 inch Nitro Steel LC Smith gets my "Damascus safe " 2.5 inch low pressure loads. However I would not want to limit a youngster that way ( unless it was my kid and I was providing the ammo). But if it is a friend or neighbor or nephew. I would want to get to something he can fill from wal- mart. In my mind that is Stevens 5100, 311 etc. fox model Bs, ranger models, nitro specials and things like that. I think I would consider a Davis one that I use "special ammo" in.