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.

Last edited by Yondering; 08/29/16.