Anyone tried these?
They sell the already loaded bullets and a kit of, I think 5 different "grits", that you load yourself and then progressively pressure/fire lap your barrel.

I have a new barrel that probably doesn't need the treatment. But, I have heard mostly good about it. I figuredI would try several loads and if the barrel needed it, give the Tubb system a try and do a before and after comparison.

Anybody here tried them already and have any suggestions, experiences or ideas?

Thanks for any input.
Hank