It is a heavy per large capacity powder choice as I can use it in 264wm being the largest small caliber I have. Nobler list it in their load data for that cartridge as the highest velocity in the 140 class only. Using QL data it's within 50fps of 570 and around the same velocity as 33. Having all 3 for testing hasn't been done yet. 1 day I'll get around to test it in 264wm (140-150gr), 300wm (215-240gr) and 338lm (270-300gr). 7828ssc yields about 100fps lower in the 1st 2.LRT looks like it was designed exactly for the 300 RUM shooting heavy-for-caliber bullets (210 grains on up). I load it behind Berger VLD 210s and Hybrid 215s and 230s, also SMK 220s, in my 300 RUM with a 28" barrel. Velocities at or over 3,000 fps. QuickLoad example: Berger 215 with 100.5 grains of LRT, 3.8" COAL, 28" barrel yields 3,038 fps right at pmax. LRT, RL-33, N570 all perform very similarly in the 300 RUM with these bullets.