That's not what I meant.
In your initial post, you said some rounds failed the plunk test, and you wanted a bulge buster to fix that.
That is just the wrong tool for that.
I suggested buying another sizing die and remove the decapping pin, or buy just the die body as a spare part. Then run all of the finished rounds through that. This will resize the finished cartridge, removing any bumps or "coke bottle hips".
With my .44-40 I had a similar problem. The rounds were not perfectly straight. The case mouth of that cartridge is very thin, and sometimes it got slightly deformed. Often enough you couldn't even see it, but the round still wouldn't feed. Unfortunately my rifle has a very tight chamber, on the lower end of the tolerance. I got a sizing die body (since I ordered spares from LEE anyway), and run all cartridges through that once more. Never hat any problems again.
