I built the rifle for a guy that is going on his second trip there. He is going to a friends ranch. He used a 300 ultra last year with the same brake. He killed 6 critters. They are going to be doing a little longer range this year so he wants a bit more power. Since I'm not the one that has any say, I'll let them decide on the brake thing.
The red cover on the turret came withe scope.