I shoot this M&P R8 in Steel Challenge in OSR category. I've used Federal and Winchester primers without any problems. Nothing negative to say about it. Only positive so far. I've been shooting it every month for over two years.
As for me, I would say incredible balance and astounding precision : I'm far from a very good shooter, but I'm always surprised by the good results I have with this revolver.
(...and this opinion is shared by any shooters who have tried this revolver at my club...)
Groo here
Had one since first introduced .
Been Dads dear gun for ever .
On a good day , with a reddot I can shoot pieces of clay birds at 100yds
It is just one of those "hit with it anytime any where" guns.