I was thinking of getting a shorter two port muzzle break just to keep the over all length down. I have used the shorter V6 Gamma 300 black out brakes in my 6.8spcll's with excellent results. However, I am not sure of using a shorter brake in a 308. Has anybody used a shirt or Micro brake in. 308? The brake I have mind is the SLR Rifleworks Synergy micro brake. It's a little over 1.5 inches long.