I'm not that familar with the BOSS system. I know what they are for but I've never messed with one personally. Anyway on to my story... My friend just bought an A-bolt stainless stalker in .270win. He bought it because it had an extremly short barrel. I pulled a tape from muzzle to bolt opening and its only 19.25. To thechamber looked to be something like 17.25". Anyhow the muzzle doesnt have the factory lip around the edge, its smooth from the rim of the barrel with a slight dished out angle down toward the rifling. I am assuming that a BOSS was machined off (some reason this thing has been cut) Anyway how bad would this potentially hurt accuracy? Should he still see what I consider normal accuracy? IE 1-2" groups at 100yrds with non premium factory ammo? (remington corelockt 150gr) He probably wont ever shoot more than 200yrds and hes a farmer so he tends to be rough on equipment.