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8133 for the win [emoji16] Sent from my iPhone using Tapatalk

mine is a custom 300 rum with a 1/7 twist 25” McGowan barrel so result might be way different Sent from my iPhone using Tapatalk

Berger 230gr OTM Imr 8133 90gr Gm215m primer Norma brass 2900fps ES 8 .002 off lands .1 at 100 3 shot group I’ve shot shot that group in 20 degree weather and 90 degree weather no change in load Warning load charge is above max safe load ! Sent from my iPhone using Tapatalk

worth the try there is a few of us RUM shooters that made the switch after one of us tested we all love it Sent from my iPhone using Tapatalk

I love 8133 it’s my go to for 300RUM and my soon to bring home 30-378 Weatherby mag. With 215m primers I can get my Es to single digits and being in MN I have yet to have an issue with temp swing Sent from my iPhone using Tapatalk