The .375 H&H kicks pretty hard and will kick hard in a Ruger #1.
I can vouch for that.
I had a #1 SS/lam .375 H&H for a while, I also had a 700 XCR .375 H&H for a while. Bare, the Ruger was 9 pounds. Bare, the Remington was 6-3/4 pounds. I moved the scope from one rifle to the other, so that weight is the same, add about 15 ounces for bases, rings, scope.
I really like #1s but the Remington, despite being more than 2 pounds lighter, was a whole lot less unpleasant to shoot. I suspect this was partly stock fit, partly the flexibility of the body of the remington stock in addition to the much better recoil pad.
Tom