Well, I shot 120 NBTs and TTSXs today with both Big Game and R-15. I only went up to 51.5 grains Big Game with both bullets, got 3,075 with the BT's and 3,090 with the TTSX's and both shot right at 1.0 with a 22" barrel. Got 2,990 @ 49.5 grains/NBT, and 3,025 @ 50.5 grains.
44 grains R-15 was more accurate in my rifle, around .75 but only 2,950 on the chrono with the NBTs. Got similar accuracy and 2,975 at 44.5.
