Thanks for sharing your experiences, Rob. It is interesting to see the difference between the brake and the A2.
When hanging any weight on the end of the barrel all bets are off on possible POI shift, but my personal experience with the Ops brakes/cans is that the shift is minimal. I use the brake and have no need to shoot the rifle without the can. I've never tried the A2 though, so I really appreciate you posting your findings.
Take care,
Mark
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