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I would not if I was you , I have had several 30-06 etc that where
ported by gunsmiths and some done in the local garage and everone
is hard to sell.
Course it is your gun to do with as you see fit
Contact the smithy at Epp's. Round hole porting starts at $60. Installing a brake is $100 plus the cost of the brake. You do know that the muzzle blast and noise will be increased with either porting or a brake, don't you?