There's a typo on the powder charge used.I got back out this afternoon to shoot the 53.6 grain charge of H4831SC that 25WSM suggested.
My Saterlee velocity test had a seating depth of .025 inches off the lands. So I moved seating depth at .003" increments.
I shot seating depths of .022, .025, .028 &.031.
All shots with the exception of the high shot on target #4 were had good fundamentals with good trigger pulls.
Here are the results...
I will follow 25WSM's thought of shooting 53.5 & 53.7 grains at .025 inches off the lands along with rebooting 53.6 again.View attachment 208216
It was 53.6 grains H4831SC.