Thanks for all the info, guys!
I shot another group of 50g loads at 2.770 COAL and got the same 2 in/1 out group at around an inch, so I seated 3 a quarter turn deeper at right at 2.760 and got a nice little triangle at a little over .6. 2.750 opened up a good bit.
Think I'll try a few at 2.765, but if the 2.760 load is consistent, that will be good enough for me.
May try a few at 51 & 52 grains at 2.760 and see if the extra distance eases pressure since primers were getting a little flatter at 51.5-52, but I honestly don't feel compelled to wring a lot more velocity out of it unless it just offers to perk better there.
Looks like a little playing with seating depth, and I'm going to have a dandy 120 NBT load.
DJ
