I think I'd try the CZ. But I'd handle both first. The Ruger 416 Safari stock fits me well, but the 77 7mm RM did not. After saying that I don't have a scope in the Safari. The 77, I do. I think the Rugers stock looks great but is designed for open sights. I restocked the 77 and all is well now. The 77 with the new stock allows my eyes to line up perfectly. Before the comb would be away from my face if I were looking thru the scope. I would rather shoot my 416 Rigby Ruger with open sights than my 77 with a scope, that is until I restocked the 77. That Ruger stock was brutal to me when using the scope.
Secondly, I believe the CZ has more surface on the extractor, that is more contact on the head of the brass.
Thirdly, the CZ would be easier to glass bed, I think.
Finally, I'm not a fan of the red pad. I prefer a little cushion. But arthritis and bersitus are two problems for me. Maybe you'll never have these issues.
