I've shot 180 NBTs over 49 and 48.5 of TAC and my rifle hated them, 2-3" groups. I loaded them over 48 of 2230 and they did pretty well. Largest groups was 1.5" with the smallest .7". My rifle seems to like 2230 for lighter bullets (185 TTSX, 180NBT) and TAC for 200+. I was going to chrony this week but because of the rain, I'll have to wait until next week. I want to see if there is any real difference in velocity with the heavier bullets between TAC and 2000MR.
I'm using the Lapua brass you suggested and had no pressure signs with any loads.
