I have an old mosin barrel and was looking at tinkering a bit with some spare parts. I was thinking of rechambering the barrel and making a pistol (read as toy). Not a sbr not an obrez (I dont want to start that discussion again) the only mosin part would be the barrel. Are the 2 bullet diameters close enough? Ill only be using the last 8-10 inches from behind the globe. I think if it can be done would make a sweet target pistol. Any sugestions would be appreciated! thanks