When I push 357 mag rounds into the loading gate on about the forth round they will hang up and no more can be pushed in unless you manipulate the cartridge in your hand to move the cartridge already in the magazine. I partly disassembled the gun where I could see what was causing this and found that the rim on the case that is already in the magazine is hanging up on the left side of the opening in the frame to the mag tub. Seems to me an easy repair would be to bevel or radius the left side of the opening in the frame to where there is not such a sharp edge to catch the rim of the cartridge. Does this seem like a reasonable plan?. Has anyone else in Marlin land experienced this?