I mixed up a batch of 50 lbs ww and 50 lbs pure. Added a few pounds of Linotype. Made new ingots and put in my Lee 4-20. Ladled some and bottom poured some. Air cooled and water quenched 50 of each. Weights this morning 24 hours later are from 388.2 to 389.7. Few culls at 387 but going back in the pot again. No defects I can visibly see. Temp at around 750 which seems to work best with the Noe mold. Are these variations enough to throw off accuracy? I would think weights to be more consistent. Good sprues. Good fill out. No frosty from running too hot. Let mold cool after each 10 casts or so. Weights are pretty much same whether ladled or bottom pour. Confused.