Somebody came up to the bench next to me at the range today and started shooting a 375 H&H with a boss on it. That was the loudest thing I ever heard even with muffs on. Glad I was packing up at the time.
I had heard at one time that Browning quit putting the boss on hunting guns and was only putting them on target guns because of the noise. Do not know it this is true or not.
Not trying to discourage you, just passing on some info.