Not sure where to post this - so admins, please move it if needs be.
Anyway - recently picked up a taurus 92, and some 9mm hardcast bullets someone else gave up on.... and I can see why. they're leading the barrel somewhat aggressively.
in the process of determining why, slugging the barrel and so forth, I decided to slug the barrel with one of the actual bullets and see what the end result looked like for fitment. Interestingly enough, when I drove the hard cast through (with some difficulty I might add), it came out with a rather surprising amount of lead preceding it. I thought I had cleaned the bore fairly well preceding this - but on inspection It had scraped the lands and grooves cleaner than I had thought possible. I was absolutely amazed at the bore after this.
While the method isn't certainly one I'd want to do over and over, and certainly isn't very practical for certain firearms- I thought I'd share as it certainly did the best job I've ever seen in cleaning lead in a single pass.