Yep. Only I tend to do it with ammo and to a lesser degree with empty brass in oddball calibers. This past Monday I picked up a '92 Winchester to go with a supply of 38 W.C.F.(38-40) ammo and brass I've had on hand for ages.
BTW, I know where there's an oringinal 56-50 Spencer in pretty good shape but it's rimfire and missing it's magazine tube. Was'nt there somebody making conversion breech blocks for them a while back or am I having visions again?