I lucked into an outstanding circa-2005 or so, Rem 700 5R "mil-spec" model in .308 This rifle is a solid - and I mean solid - 0.4 MOA shooter with 5 rounds of 167-gr Scenars. My dilemma is that I'd like to have the barrel threaded for a muzzle brake so that I can use this in competitions where I need to see my own misses. Right now, there's just too much muzzle jump for me to see misses at close distances up to 500 yards or so, through my high magnification scope. Considering that against overwhelming odds, I won the Remington Lottery with this one, I'm hesitant to do anything that could jeopardize the accuracy of this fun little rifle. What are the odds that removing, threading, and reinstalling the barrel will mess up the rifle's mojo even a little bit?