Manyspd1,
that is some pretty impressive velocities and better than I get from my 375 H&H by a little..Speaks well for the .375 Ruger and it does have more powder space than a 375 H&H so I am not surprised and your loads are not even max..

I have built a couple of 416 Rugers and one 404 Ruger and they are hot numbers and really cook...conversion of the Mauser 98 to a Ruger case is a snap. Unfortunatly they are popular wildcats for the time being and I sell them faster than I can make them. It's just a nice case.