As mentioned, if you want recoil reduction, get a partition style brake, not a radial port brake. Yes the vias will reduce recoil but not nearly as well as the likes of the DE or Holland. My small diameter PK brakes will not be ready until later this summer, the medium and large PKs will be here this week but they are to large for the barrel you have.
As far as magna porting, do not waste your time, you loose performance and you will get very little recoil reduction. Magna porting is and was designed for muzzle jump control on handguns. It does control some muzzle jump on rifles as well but in many cases, on a rifle with decent amounts of recoil, magnaporting often makes the recoil feel even heavier because it comes straight back into your shoulder with no energy wasted lifting the rifle up on recoil.
Adding weight to your rifle is fine but it adds weight to your rifle!!! ALso, your stock is not a good one for adding a mercury dampener. I do not like them anyway. Why have a slim sporter rifle and then add weight to it.
THe right brake and a good recoil pad are all you need. If you get a good partition style brake on your rifle, recoil will be about like a 25-06 at most.
As far as noise, no free lunches here. THe better your brake works, in general, the louder it will be, just a part of the game. If you want a quieter brake you give up noticable recoil control.
Also, shoot a vias off wet ground in prone position and you will be cursing while you clean mud and dirt off everything. That is really not the case with the solid bottom partition style brakes.
Kirby Allen(50)