I have a couple boxes of 139 LRX bullets that I purchased to load in one of my 7 Rem Mags, but haven’t gotten around to it yet. I’ve spoken with techs at Barnes before and their advice was pretty much spot on. My plan is to start with RL 26, and try to find an accuracy node between 3,100 - 3,200 fps. Going to use 140 TSX data since Barnes has indicated that it can also be used for the 139 LRX.
