Wait a few months and look at 6.5 prc. I bet ruger has a rpr out in it within a year. If not, even with shoulder issues, a 300 win mag with some weight and a good brake can get down to 6.5 levels... ish.
'...no one read it it seems' That's why I started my sentence on muzzle brakes with 'I also injured my shoulder...', point taken on the paragraphs, was in a hurry. Attention to detail.