I bought that exact rifle about 2 months ago with longer ranges in mind. I'm happy with the brake, I feel less recoil with this gun, which also has the P.A.D. recoil pad than with my light weight 6mm remington. I do close the brake when cleaning the rifle to keep solvents, oil, gunk out of the ports. I also close the brake when hunting without ear protection. I considered also an aftermarket brake. I know there are more effective brakes, and probably cheaper ones too, but locally the price difference was about $100-$130....and there isn't a 'smith I trust around here. I did see a price of $90 to install one from one shop, I don't know if that is the going rate.
I'm very happy with it and the accuracy is what I expected. The only thing I didn't consider is that the 24" barrel is actually the measurement including the brake, I was hoping for a little more velocity.\
I also bought a Vortex viper 6.5-20 mil dot scope. I'm very pleased with it, especially after hunting with it this weekend. I would recomend it to anyone, I hear they have a great warranty and customer service. There was also a $50 mail in rebate....that makes about $450 when that comes back.
The magazine allowed me to seat 168 VLD's all the way to the lands, but this gun shoots better with alot of jump. I had a post a few weeks back about it, "called low es/sd, accuracy not there".
Anyway, I'm happy with mine let me know if you have any other questions.