There are some conflicting stop points online so I called Sierra, their tech was pretty enthusiastic about rl16 for the 270. He said their accuracy load was 51.5 gr. I started at 51.5 and went to 53. 51.5 shot almost as tight, 53 showed primer cratering. Again this was in my rifle so I would start around 50.5 and work up from there. I have not got a chance to reload nor get out and verify this load, life has been busy. Best wishes and hopefully this info is useful and if you do get to try rl16 post back with your results. Once I find more time I have 2 boxes of 145 eldx I'm going to try as well