Didn't chrony the 55 grain starting load, but got 2790 fps with 56 grains, 2850 with 57 and 2920 with 58, so I'm guessing around 2730 fps. Doubt it was copper fouling as I don't shoot enough and over-clean, if anything. I like to think my case prep is pretty good, but I'm still learning... only bump-sizing, not full length sizing and trimming / chamfering to 64.35mm. Thanks for the ideas, though...
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