Thanks to all who posted.
Great feedback and discussion. Since I only have a Hawken and have only shot 370 Maxi-Balls I can't compare and contrast. I do know the Maxis with 90 grains of RS is more than I can handle for a full range session.
I have since bought some Hornady .490 RBs and .15 patches. I plan on backing the powder down and see if it's easier on me. I really love the look and feel of shooting the gun. It's a great challenge as my in-lines get a little boring.
Any tips for a first time PRB session? I bought the Hornady lube and wonder if you lube the patch right before loading or at home before you go out?
Looks like I'll need to get a Renegade to be able to discuss the differences with observed facts.