Whats the twist reate on your barrel ? if its fast try the 140 gn partitions - a better "deer stopper" anyway. I run partitions in lots of different rifles and cals, from 2506 to 300wsm.
I have found they are always accurate, no issues getting 0.5 - 0.7 moa in any rifle. you might need to try slower powder or fiddle with seating depth ? I have never found them fussy to find a sweet spot
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