Sorry not really a cast question but comparing it to cast principles.... I know cast bullets should be .001 or .002 over for good accuracy. But do jacketed bullets get accuracy with smaller diameters? I assume they must as most 44 mag rifles are bigger bores than .429... so is it the higher velocity and pressure obturating them?
Question relates to running lower power 44 mag loads(more like '44 special +P+') with .430 jacketed bullets in a .432 bore rifle. Should work for accuracy or will it be same problem as a cast bullet undersized 2 thou.