I have a BLR "Lightning" which has the alloy receiver (supposedly titanium - aluminum??) It is in 7 MM Rem Mag.
I also have a Browning A Bolt in 7 MM Rem Mag.
the BLR is a bit to get used to, but the triggers were improved considerably in that design over its predecessors. It is not a take down model which may make a difference for accuracy.
Both the BLR and the A Bolt, on a proper rest at the range, with a shooting pad on my shoulder, have done 1 inch groups (loonie to be exact) out to 300 yards, with no wind blowing on the ribbons set out on the range.
The BLR has a rotating locking lug receiver, so it is a very solid action.
Trouble is the BLR is very fancy wood and I am afraid to hunt with it. It does a good job, but it is not very light.
Perhaps try hand loads and play with your bullet seating? You may also have damaged the crown of the barrel with a cleaning rod as you have to clean from the end of the barrel. Re crowning may restore the accuracy for you.
Drewski
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