RE: What are resonable groups to expect from a Browning BAR?
I would try some 165 grain rounds as well as corelockts. I have a 308 shortrac that will shoot sub MOA with Hornady 165 BTSP's. IT shoots about 1.5" groups with Remington 150 Grain Corelokts. Also, let somebody else shoot it and see how it performs. I wouldn't send it in yet.