RE: Muzzle Breaks
I have one on my 7mm mag. I think it looks awesome on the end of the barrel. Is is the same contour as the barrel and there is no seam where they meet. Reduced recoil A LOT and the noise isn't much louder. You should ALWAYS have hearing protection when firing a gun anyway, so if they hurt your ears thats your fault for not wearing hearing peotection.
358WINMAG- As for the Lead Sled, you better be careful with that thing. All that recoil is now being tranferred right into your stock, mounts, rings, and scope.