I'm curious, You have brass damaged by the bolt, if you continue firing the gun and continue to get damaged brass and more etching on your bolt face, then what?
My apologies if this has been covered already.
edit to add,
I just googled "browning x bolt, bolt face etching" and the only relevant post I found was the one below and Winchester admitted the fault lay with them and replaced the guys bolt. This was from reloads using Winchester primers so may not be relevant?
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