For 120's, RL15 & H4350
For 140's - 160's, RL22 & Norma MRP
I'm not a big fan of H4831 or IMR-4831 but both can be good.
RL19 on the 280, does nothing that '22 won't generall do better.
MM
As big a fan as I am of RL22, I'm surprised I did so well with 19, I've never been sold on it and always though along the lines you do as compared to 22. But I also haven't worked much with 22 in it but MRP did surprisingly well with some decent velocities. As Marc mentioned, I'm seeing some good potential in Hunter as well.
