I shoot 40.5g imr4350 under a 142g smk in lapua brass with a cci 200 to light it off. My barrel is 28" and im in the mid 2700s...I stopped at 40.5g for 2 reason first and foremost with this combo its like a laser and second its slightly compressed..I know several guys that shoot 140s and both H & IMR4350 that are above book max but if and when you get close watch for pressure signs and dont make big jumps. Youll find another node higher up.
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