Did some load workup with mine today. It is a 24" proof 1:8.4 and I'm working with ADG brass and H4831SC with the 195 Berger. Never hit pressure signs and seeing the best groups just shy of 2800fps. COAL is 3.056 which is .025 jump in my chamber.
Also worked up the 180ELDM with same components and settled at ~2875fps for best accuracy.
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Is yours a SAAMI chamber or custom?