Decided to make a chamber cast of a 6.5 Carcano. I cleaned the chamber and barrel, measured the barrel for where I would put the plug, I marked a dowel for length. Start melting Cerro safe, spray chamber with drop out mold release, put in cloth patch at appropriate depth, warm chamber and barrel with heat gun. I then poured the Cerro safe into a funnel and clear tube setup until I could just see it at the rear of the chamber. Waited 15 minutes and then tried to tap it out with a 3/16” brass rod and plastic hammer.
It didn’t move, ok bigger hammer, no go, ok let cool some more while I cut down rod to 1” above muzzle. 1 lb sledge and I start pounding nothing moves, I am now at the half hour mark, so I put some CLP in both ends and let sit while I find a bigger hammer.
OK bigger hammer 3lb sledge and now at 45 minute mark. Start pounding brass rod bends but no movement. One hour mark same as before no movement.
After bending both brass rods I give up and try to figure how to get this stuff out.
I take action out of stock and melt the Cerro safe out with a heat gun, all while holding the action at an angle while the stuff drips into a small flat metal pan. Straighten brass rod and pound again, not moving. Melt some more out and finally pound out patch with only a little Cerro Safe on the end of patch. So now I am left with no cast and an action to clean up with some drips of Cerro safe here ant there. I am afraid to try this again. I can’t tell if my chamber is extremely rough or what. Not sure what I did wrong.