There are far to many things that can be causing your problems with your Bar! I will only tell you that I have in the past owned 4 Browning Bars in the .270 cal, 30-06 cal. 25-06 cal and the .338 Win mag cal. All of these rifles shot under 1.5 inches at 100 yards off the bench. The .270 shot .685 with factory Federal 130 grain ammo!
You may need to send that rifle to the Browning company and let them look at this rifle of yours. It will be cheaper than most gunsmiths and Browning knows their products far better than most.
You may need to send that rifle to the Browning company and let them look at this rifle of yours. It will be cheaper than most gunsmiths and Browning knows their products far better than most.