I'm running 46.5gr of 2209 with a 143gr eldx in Lapua brass. 2780 fps from 22" T3.
My oal is 3.203" and is off the lands.
I'd try seating a tad deeper. Say 20 thou (.5mm) off lands and see how that goes.
My load is reasonably accurate in my t3
but every rifle is different
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