I will throw another 2 cents in,
If I were you, I would be looking for a muzzle brake with a target crown on it.
Most 30 cal Muzzle brakes are tapped with the same threads unless you buy one for say a Moisen or a PTR G3 type rifle.
To do it right your gonna want to have the end of the barrel threaded, probable 5/8", so you will probably need a gun smith to do it.
I like muzzle brakes, it is nice when you can keep your eye on the target after you pull the trigger and still nicer if you can get a quicker follow up shot.