Third vote for 419 rail. Figure out what zero range you want based on vertical adjustment of your scope and then select the amount of cant of the rail. If you want to zero 50 yards or less rail cant should be about half the scopes total vertical adjustment. Usually this works
There's plenty of online information about this. Also on both of mine, I have two, the fit is really tight. I had to tap both of mine on with a hammer after I lubed them with grease.
I also have same rings, I got the lowest ones.