Neck thickness is .0135 now after 11 rounds. Primer pocket still pretty tight.
From rounds 5 to 11 I went from 76.5 to 77.4gr and back to 77gr for the final round of powder. No hard bolt or extraction. Bullet Slowed down slighty with more then 77gr of powder. Seems 77 was the sweet spot for velocity vs gr of powder.
With some federal premium brass from FGMM ammo I loaded up to 77.8 gr h1000 with the same 2900 velocity. Shoots .66 inch 5 round groups so far. Thinking it will tighten up further after 100 rounds through the gun.
Photo below is the brass with 10 rounds on it before the 11th firing, next to one with none.
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