The much smaller (38 pound) .55 caliber Boys anti-tank rifle had a separate (and only somewhat effective) recoil damping system along with a muzzle brake. I fail to understand why such a separate recoil absorbing system was not incorporated, in addition to an EFFECTIVE muzzle brake. A compensator like this is not effective and there are many and better designs that could have been used.
All that said, what is the point? Other than producing a huge Ka-Boom! — so what?
There was a time where I was looking for something bigger and hotter than a 300gr .44Mag from my Super Redhawk, which prompted my call to JD Jones at SSK. I wanted something even bigger, and was looking into a .375JDJ barrel, or maybe a .338 or 45/70 barrel for a TC Contender. I was looking for a serious "Boom Stick," after all, the .375JDJ has taken EVERY large and dangerous animal on the planet (including elephant and cape buffalo... From a handgun!).
I was justifying it to myself with the old joke, "Hey, that elephant gun in my closet really works... Not a single elephant in my back yard."
Thankfully I came to my senses and decided against it. Instead I bought a S&W 625-5 and Ron Power did a terrific action job on it for me.
Mark