Oh, somehow neglected to note-

The gun is hitting low and wide.
I really wanted to have chrono data to post today but neither of the chronos at the ranch would rise up outta thier sleep today to time the doube rifle's roundball loads.
Pity that.

The 4198 loads in the Tolley were nice though.
I think I can pick up the pace with that effort, although I will hesitate till the chrono issue is settled before I move much more on the 500/450 3-1/2" BPE nitro for black loads with that gun. The 325gr remington jshp slugs were cruising out just a little high and a little wide. That was with 52gr 4198, if I go by the standard method of 40% of case volume mass of FFg I should be running 60gr. I just want to see the chrono tape on the work up to that kind of charge. The 52gr load feels and sounds good, a bit more throttle and the groups will converge at the fifty yard target board.
With that rifle I'm just seating to juuust into the cannelure groove, no crimp. That gives me plenty of jump, that rifle spits .458 little 325 grainers, not ounce roundball, the Tolley weighs ten and a half pounds, the sixteen bore double rifle weighs just under seven and a quarter pounds.
Perhaps Sunday will be the day for happy loads in the sixteen bore.

--Tinker