I've just started casting recently and had been purchasing my equipment whenever available. I've decided to go with PC and sizing my bullits with APP and Lee bushings; made a small batch sized them with 0.357 bushing and they all measure 0.356". Today came my pin gauge set and all of my 8 bushings (356-358, 401, 402, 310, 452, 454) are undersized by at least 0.001" Have couple NOE bushings and those are spot on. So what would you do ? Contact Lee and try to exchange, use as is, knowing they are undersized ?