Seeking advice - 6.5 prc reloading

[Nine Banger]

Finally was able to hit the range again with some properly sized brass and a chrono. Worked up from 55 grains to 60.
55 - 2755 easy extraction.
56 - 2838 easy extraction.
57 - 2914 easy extraction.
58 - 2972 easy extraction.
59 - 3078 little bit of bolt lift, extractor mark.
60 - 3120 stiff bolt, ejector mark.
Factory 147 eldm - 2780 avg for 3 rounds.

My plan is to load 20 or so at 58.5 and see how they do in a group and verify at 600.

I feel this barrel may be a little slow, or H100 is not the best powder for speed. All the tmk rounds shot in a single group were again under 1.5 moa with a fist for a rear rest. So H1000 seems to be an accurate choice, and thats really what matters.

Thanks to all who chimed in here, every day a little wiser!

57 is the safe bet for hunting (function) and travelling (heat).