Have read the postings regarding the 260. I own a 700 mountain rifle with a pencil thin bbl. that Darrel Holland rechambered to 260 AI that I load 120 BT. I did have a minor problem of chambering the AI cartridge. I polished the feed ramp with my Dremel tool and the feed problem is no longer an issue. BTW, this pencil bbl. 260AI shoots bug hole groups off the bench. Has accounted for numerous big game animals and is a pleasure to shoot. MTG
