I am building a 45 caliber smokeless muzzleloader. This will shoot a 325 grain bullet in front of 65-71 grains of H4198. Needless to say, I think it will have a little kick. I am looking for a muzzlebrake that screws on then clamps in place. It will need to have quite a bit of surface area since the bore will be so large. I have contacted Benchmark to see if they can do one of theirs in a .458 bore. While I am waiting to hear back from them, does anyone know of any other manufacturers that I should consider?