Marshall Stanton said:Ironhead,
Indeed the cylinder base pin is an issue on these guns, and the Belt Mtn. pin is the best remedy to this situation. In fact the next segment of this article will deal with installing the Belt Mtn. pin as well as some other small customizing tricks that are low/no budget, only investing in a bit of time.
I had the same problem with basepin jumping out too. Simple, easy cure. Looked at my freedom arms 454 casull. Took basepin out and drilled and tapped a 6-48 hole and used a long filler plug with a .050 allen head. Snugged her up and used the mark set screw made on barrel and drilled a small dimple for set screw to rest in. Took about 45 minutes to do and had the filler screw so it was basically free. Nevr a problem again. God Bless Steve