I found it interesting that Ramshot's published 5.56 data for TAC and 2460 show one full grain and ~100 fps more for the 75gr BTHP compared to the 77gr SMK. My own load development shows similar results; I'm able to push the 75gr to the same speed as the 69gr TMK or SMK, ~2800 fps from my 16" 1:8. TAC, 2460, and Benchmark all achieved that. Varget is often recommended, but was about 200 fps slower.
Yeah, you can get more speed out of the 75 but it never was accurate enough for me at those higher speeds.... YMMV as it does with a lot of opinions here.
