Bear - I am working on my range report now, but I actually found that I going to get thinner grips because I want to be able to hold onto more real estate with this thing.
I have big hands too, probably not as large as yours though, and have preferred thicker, more bulbous grips on the single stack 1911. It just fit my hand better.
The muzzle break does a good job of managing recoil, plus it's all steel up front ( long with my whole weapon ) so there is some heft there. Mine weighs in at 1.9lbs unloaded.
I was posting yesterday that I thought an aluminum framed 1911, with +P, has a similiar kick to it, the difference is in the gas that vents out the top. I could actually feel it hitting the top of the booth and then coming back down on my hair... LOL
The round is a smoker and it REALLY gets people's attention. I have some plans for a real world test of the rounds abilities once I finish off the project and that will probably help some guys see what this round is really capable of.
I can tell you this, I would NOT want to get hit in the chest with thing, even with body armor on. The terminal transmission of energy would probably stop your heart.