Harry,

Thanks for your comments.

Yes the patch should come off right after leaving the barrel. That's what I'm experiencing. Interestingly, with my .500 I am using less turnover than what you see there with my .577. I don't see any difference in performance of the patches, though. They all come right off.

Maybe I'll try shortening the .577 patch a bit and see if there is an improvement.

Again, thanks for the comments.

Best,
Curl