Re: do muzzle brakes effect accuracy?
Any time you amke any change to a barrel wether it be lenght adding or subtracting weight your going to have an impact on accuracy due to the change of barrel harmonics.
I had a 340Wby that shot great with a load I worked up but it kicked like a mule , had a Vias brake instaled , accuracy went to the bucket. I asked the smith about it he said to tinker with the load a little. I added 2grs and the groups went back to normal.
Over all I say that the accuracy improved because the recoil was cut way down and I'm not preoccupied with getting smacked in the shoulder as hard.
I had got a JP brake and put it on one time to see if their was any real differance in recoil reduction , the JP works a hell of alot better , but its ALOT louder and realy ugly , works good though , but I stuck with the Vias.