New to this site, just purchased a Ruger American in 450 BM with a 16" barrel. The factory muzzle brake for it is around ~ $130, is Ross still making them? The thread looks a little old and the site will not let me PM him until I use it some more!
Last I heard, he's still cranking them out. Email him here: email@example.com
While brakes on a 450b are not as night and day as on an overbore caliber like one was on my 300 WSSM, they still reduce perceived recoil enough to make them worth while. The one Ross makes does as good a job as any at substantial savings over most. I recommend the SS version since it costs the same a CrMo. You can blacken stainless if it bugs you. Just putting a firm bead blast on them reduces their brightness, relative to a parkerized barrel, so much that many folks stop there. I bought some of that Caswell 370 SS Blackener and though its a little more touchy applying than cold blue/black on plain steel, it works just as well. The smallest bottle they sell will last you a lifetime of small SS parts and brakes.
This has been already discussed ad nauseum, but when you divert some of the rocket blast 90 degrees closer to the plane your ears are in then yeah, the sound pressure level goes up. Worse for folks shooting on either side of you. Please don't shoot brakes without hearing protection, even when hunting. Wear amplified muffs. I've shot my 450b twice w/o protection. Once due to a distraction and once hunting. The latter was because my muff batteries went dead in the stand. In the latter case, it was good that I planted the deer right where it stood, as by the time my hearing came back online, any wounded deer that ran off would have been out of earshot long before my hearing recovered. Don't do it on a dare, to prove how tough you are.The insults visited upon your body when you're young, come back like the ghost's in Scrooge, to haunt you later on. I'm not being an old granny on this. Just don't do it! WRT recoil, yes, I'm an old granny on that.