Thread: 243 load advice 1:10 twist winchester mod 70

This will do nicely, 40.1grains of 2209 seated just on the lands, every time I tried seating it off the lands the grouping opened up, its not jammed in tight just touching.
Speed was 2840fps
I could probably fluff with it and get it better but for a hunting rifle that won't be shot much past 250yds it's plenty good. If my 270 project comes up good it'll probably do more walking.