hellò everybody, I need some help: when my grandfather died, I've found in his home quite a lot of ammos cal 22 long winchester, NO WEAPON! so for some times I just kept them in a draw, now they 're getting old and I would like to shoot 'em, the problem is that I don't have the proper gun cal 22, I only get a piece of barrel cal. 5.5 mm. while the 22 are 5.6... and here comes the point: what do you think about? will I blow my hand? or just destroy the barrel? many thanks for any advice. bye gianfrom