I just heard back from MNP about my 454, regarding the Mag-Na-Brake. Because I have the older model SRH with the grey finish, they would buff the finish to a low luster stainless finish. I really like the grey finish. Maybe I will work on a single-shot in 308 caliber. Sounds like a good reason to get another firearm. I enjoy shooting the 454 now with out porting or any other recoil reducing fixture on the barrel. Anyway thanks for all the advise.