I owned a bar markII in 7mm mag with boss.It was very accurrate for a semi auto but the boss was extremely loud and it failed to cycle on one occaision while hunting.I sold it to another fellow and it failed to cycle for him twice while moose hunting.The odd thing is that this gun fired several hundred rounds at the range without a problem and failed to function only while hunting.I now trust only bolt actions as they have never failed me.