Agreed with bigbulls. My .270 has porting, and it shoots liek a dream, its a BAR semi auto, which I hear semi autos dont have the accuracy of bolts, which I tend to agree, though the .270 is known for accuracy, the accuracy I get out of my 270 auto with porting is crazy.In a sense porting may make you think the gun kicks less due to less muzzle rise. May increase accuracy, I believe should make it louder though not sure of this one, certainly a brake increases noise.

I read a muzzle brake actually reduces "felt recoil" though real recoil, and that felt by the scope is always more if not twice, since the gun kicks when it goes off and once those gasses hit the brake, the try and make the gun go the other direction kinda like pushing someone then pulling em right back. I have a brake on my abolt, though nowadays I won't be buying a brake again. I'd consider porting, though I feel a good rifle needs neither. And I haven't found a rifle in my adulthood that the kick scares me, so.