BOSS is great. I have a 270 that will make one ragged hole at 100 yards with factory ammo. I have fired tons of different stuff through my gun and found factory Winchester to be the best. The Federal High energy losened the Boss so beware of this stuff. A loose boss is no good. My POI changed a foot when my boss was loose. So keep it tight. The Boss adds accuracy and reduces recoil. Yes the noice is bad but at the pit we all have hearing protection on and in the field I only make one shot. I would recomend it anyone!