Cerrosafe nightmare!

[MarkL]

I've made many cerrosafe chamber casts of pistol barrels and single-shot rifle barrels, but I screwed up on a my first bolt-action. I basically overflowed the chamber and got c-safe in the receiver. It was coming out of the gas vent hole and the action screw hole. It was stuck and had to be melted out.

After much thought, I decided to use a heat gun, which is an electric thing that looks and works like a hair dryer but gets much hotter. I found one on sale at Harbor Freight Tools for $10. I stripped the gun down as far as I could and sprayed WD-40 all over the receiver so the c-safe wouldn't stick anywhere and proceeded to melt it out. This worked pretty well. I'm confident I didn't overheat the steel, and I would recommend this procedure to anyone else in the same predicament.

Unfortunately, there was still some c-safe stuck to the chamber wall. I could force an empty case into the chamber (trying to break the stuff free), but it came out dented. I decided the thing to do was to make another chamber cast (the right way, which is another story), hoping it would take the residual c-safe out with it when I popped it out.

That helped a lot, but I can still see some c-safe when I look in the chamber with a flashlight. It appears to be right at the end of the neck. It must be a very small amount because...

1) A fired case chambers easily
2) A loaded round chambers easily
3) The chamber cast I made shows no evidence of foriegn material there.

I think the gun is safe to fire at this point (may try some reduced loads), but I am still looking for ideas to get that last bit of residue out. I tried cleaning with Wipe-Out and Montana Extreme with no apparent effect.

So, does anybody have any suggestions? Maybe there's some chemical that will dissolve a small amount of Cerrosafe and not hurt my gun?

Cerrosafe is an alloy of bismuth, lead, cadmium and, I think, indium? Real healthy, I'm sure.

The gun is a stainless steel Tikka T3 in .308.