I have a TC Prohunter in .300 win mag and am reading horror stories about bad chambers and rifling. What I want to know is how you do the chamber casting to see if there is a problem in this area.

the first and easiest way is to shoot a round through the gun and inspect the case for any obvious buldges and scratches from extraction.

I haven't heard what the comlaints have been about these chambers so I'm working a little blindly here.

If you want to cast the chamber that ia easy enough as well. First you will have to order some cerosafe. You can order it from brownell's.
it's a low temperature metal that will melt at somthing like 300 degrees. Plug the bore of your gun just ahead of the throat with waded up patch or anything. then just fill up the chamber from the back with the melted cerosafe.
You can melt it in a pan on the stove.
Let it cool for a while and then push the patch on through and pop out the chamber casting.

The melting range for Cerosafe is 158F to 190 deg.F. Be sure to pre-heat the chamber area with a heat gun or hair dryer before making the pour or the cool metal will freeze the stuff on the way in. If that happenes (I know) you can remove it with boiling water.

quote:

Originally posted by northwoods39:
I have a TC Prohunter in .300 win mag and am reading horror stories about bad chambers and rifling. What I want to know is how you do the chamber casting to see if there is a problem in this area.

About 90% of the TC chambers I've seen were sloppy, but some of the sloppy ones shot fine.

Thanks, I'll order up some and do a casting. Just read some disturbing things on Bellms TC gunsmithing site. I want to see what I'm dealing with if I cant get any accuracy out of this gun. By the looks of the fit and finish of this rifle, I can expect the chamber to be crooked also.