I'm pretty new to black powder. I bought a old pistol stamped on the barrel Hawes firearms Co, Los Angeles Calif on one side and 44 cal. navy model made in Italy on the other..there is also a PN on one side and a xxv1 on the brass. My research tells me this is a 1970 pietta 44 caliber made in Italy and assembled in LA. P lease tell me if I'm wrong, that may be my problem. Anyhow, the cylinder has some doesn't always turn and you can see it's wore out so I ordered a new one from cabelas.it came in today and I excitedly opened it and disambelded my gun and started putting it back together to find out that it wouldn't go nCk together. The cylinder they sent me is approximately 3/16 inch longer. The box it's in is marked right. I'm not sure what to do next. Anyone k ow what is the deal here.