What’s the twist rate of bbl? And have you measured max COAL ? For bigger pills (160 and up) you’ll probably need to seat them long and that will help with the compressed loads. I was running 160 TMKs and 162 AMAX with 2217, but speed for sweet spot was around 2880 - 3000 fps. Have been playing around with RL23 recently with 160TMKs yet to confirm optimal load but getting up to 2970 fps (61.5 gn) without hitting pressure signs. Have just rebarrelled my SAUM so will need to start again with load dev. As @Tahr says RL26 should be a good choice, but if you can’t get it then try RL23.
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