I run Federal Mag primers and run 70gr. of RL25 behind a mollied 160 TSX which is fine in my gun, but it's a custom with a longer mag box and that lets me seat out a bit further. I seat to the lands. Have heard from a pard here on the fire that this ran a tad bit hot in his Montana and I believe he backed off a half grain. It runs fine in mine with no pressure signs even in 100+ Texas heat, but I strongly recommend working up slowly. I think it was a speer book max load if I remember right, but worked it up a couple of years ago, so don't exactly remember where it originated from.
