Just starting load development on a T3x SL Creed with H4350 and the LRX. Going to focus on 41.6 - 42.0 and see what I can get. Not very fast, but will game ever know the difference of another 100fps? Nope
From my Barrett FC 21" barrel:
127 gr LRX 42.5 H4350 TULA Horn brass 0.050" jump 2735 fps Average
Shoots ~0.7 MOA and works great on critters.
147 gr ELD-M 42.5 H4350 TULA Horn brass 0.010" jam 2630 fps Average