Thanks for the suggestions. I have Trailboss so will be trying that, and maybe some of the old "Blue Dot" reduced loads, lots of people had good luck with these but there were also a few questionable incidents.
I don't need a fast twist as I'll not be using it subsonic, I got on real well with the supers in 300 BLK, its such a small amount of powder a reasonable size (DPT magnum) suppressor was very effective.
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