RTRNew Member
New to the forum and have a question,I will be picking up my new A7 long range Friday and would like to have the barrel threaded for a muzzle brake while it's at the gun shop it has what sako calls heavy contour barrel,what thread count should I have them do,seem like 5/8x24 is really common but after some reading I found that your barrel thickness determines this,is this correct??,and it's a 300 win mag by the way