Have several lbs. of RL15 & RL17 so looks like I am in good shape for reloading.
Dies are on the way so I just need brass now
I think you will be just fine with those two. Don't think I have ever heard of a Ruger 375 Ruger not being a shooter. Many of them seem to think they are varmint guns, it will be neat to see how it all works for you.