Is there a muzzle brake that works as well as a machined barrel, or threaded barrel with a screw on device, that would be a bolt on product for a 308 700 varmint? I see smith prices from $150 to $500 for a machined barrel solution. I think a machined barrel looks better than other options. Lots of available options after the barrel is threaded. I would like to NOT be at the mercy of a smith while my rifle sits in line at their shop, and have a modified rifle when I get my rifle back.