My suggestion is to get a 308.
You're wanting a cartridge that's proven it does well from 16-18" barrels for hunting out to 400m... That's called a 308... Why blow 55-60gr powder down a barrel for an academically small increase in performance and a shit load more noise and less barrel life?
Fwiw, I doubt there is any meaningful difference in efficiency between 270 Win and 6.5 PRC. Tahr gets 2990 with a 130 from a 20" 270. I can get ~3200 with a 130 from a 26" PRC so shortened it would be similar.
Bookmarks