antelopedundee
Well-known member
IIRC for starters solid copper bullets need about 3 grains less powder than lead core bullets of identical weight. As powders can also vary from lot to lot I'd make that 4 grains just to be safe. While your loads may be a little hot you're not close to blowing up the rifle. This assumes that there are no other factors like cases too long or necks too thick.