I have had this marlin 39a for a number of years and it has developed a feeding problem. The gun will double and sometimes triple feed rounds that will jam up the bolt coming forward. I them remove the mag tube and remove the ammo place a small instrument under the round on top and the other one or two will role out. I took the gun apart and noticed the shell stop is below the level of the magazine opening not engaging the rim of the shells. I removed the shell stop and cleaned under and all around it. Reinstalled the shell stop and when I tried to push it down it would stay down and not spring back up. The bolt rides over the top of it allowing it to spring up and down but it will not come back up after being pushed down. Is there a fix for this? Thanks Bullett
I dont know if this helps, a number of years ago when we werent matching the cones to the caps as well I used a method that was kind of a pain to do but worked well. I used the stock cones and bought some fish tank air line that was flexible { like rubber} and made small rubber bands to go around each cap. The rubber bands were very thin to not hinder the hammer hitting the cap. Takes longer to load and you have some homework to do before the match. This was quite a few years ago when CCI made better caps they were just to loose. Bullett
I have a ruger 45 acp cylinder that I have used in my OMV ruger. As best as I can measure 1.84 in at the part where the base pin goes through to the star on the back of the cylinder. And 1.71 in the length of the cylinder portion that holds the shell. Here are some pictures. Thanks Bullett