I have several Bees MKV in 300 WBY MAG. One German, one Japanese and two US made. All shoot 1/2 MOA and I am not that great of a shot. I do reload. All except the German that is over 60 years old have muzzle breaks. Kick not as bad with the break. I hunted everything from springbok to whitetail and wildebeest. I also have several Win M70 all with the BOSS. All shoot MOA or better. My 30-06 shoots less than 1/2 MOA. I like all of them.