Thanks for your thoughts Belgmart.I used to load a 115 Gr..321 as cast bullet in a 32-20 case and it is wonderfully accurate but the cases sometimes stick and when they do come out they have a good bulge near the base and sometimes they separate, so I used to have to carry a hook to dig out the uppe...

OK Thanks a lot guys. I think I have made up my mind to rebarrel and chamber to 32-20. In the long haul it just makes more sense to me. Again Thanks to all of you who spent time getting the info.

Thank You for the quick reply. I was looking for the diameters of the case mouth (O.D.) and just in front of the base (wondering if there was any taper ) and also the O.A.Length plus the Diameter and thickness of the base. Thanks in advance if you have this info.

I can not seem to find the chamber dimensions for the 310 Martini Cadet rifle in any of my many reloading manuals or from an online search either. I have owned one for many years and just love the beautiful little thing. It has had a 32 20 chamber reamer run in it offcenter (probably by a drunk or n...