Re: 7.62 suppressor going on a 260?
I run a SWR Omega 30 can on my .260. Formally was a .308 and I think with my new barrel, and new cartridge it's quieter, but that's just my opinion.
I think the noise reduction is due to 4" of additional barrel, and using 3gr less powder. Less gas volume, and lower pressure at bullet exit helps the suppressor work. Again, all my opinion which is neither professional, nor qualified. I have friends I regularly shoot with and we all agree that the .260 sounds different from the .308.
Branden