I've had a couple problem chambers like that. Both hiwall 32-40s. Actually three. Another was a German feurstutzen I got from bpjack.
First fix was to rechamber to a .32 straight taper case using the Krag case. Worked great for breech seating and smokeless but terrible for BP. Few years ago I rechambered both to the regular Krag chamber with the shoulder. Working good with both powders now but is an odd chambering all being 32 Krags. 
Since then Butch decided we don't have to use BP at Butte matches. 

I have read about chambers having a steel insert installed and rechambered.  In my rifles the off center chambers effected the throat. so not sure how one would contend with that.

I sleeve chamber often. I thread the insert and install with Loctite so it can't move. I have soldered them in in the past but found that is not the best way.

I’ve always felt a 32 Krag would be a great cast bullet hunting cartridge. How did you chamber, 30-40krag with a 32 pilot, then a reamer to open up to 32 caliber? My problem is the chamber is tilted, if that is the right word. The only solution I see is drilling out and inserting a piece and re chambering.
Mike

yamoon wrote yesterday at 10:27pm:


The first re-chamber was with a strait tapered reamer with .32 pilot. Second rechamber was with a borrowed 30-40 Krag reamer. I wrapped the pilot with Scotch tape till it fit the lands. The reamer cut the shoulder and body out leaving the throat and neck untouched. Scotch tape was not effected in any way by the sulfur cutting oil or lands.