Thread: Different brass strength between batches?

Hi team,

Bought 2x50 boxes of Hornady brass the other day for trying out 90gr eldx for my .243. Did a ladder test from 2gr under to 1 over ADI max loads, all ok to me, small crater around primer and slightly flattened, but it was doing the same from 2gr under max load. (Federal match primers and ar2209) All brass was FL resized from New. Settled on 44.5gr, as it should get me 3100fps.

Loaded 50 to sight in and give some turkey a hard time, in this 50 there was 20 bits of brass from the next box, a different batch.

While sighting in a round gave me a slightly stiff bolt, good extractor/ejector marks, indicating high pressure?? Trade another, fine, then pressure sign, primers all looked similar.

The only variable is the brass? I checked the boxes and they were definitely from different batches. Is it a case that I need to find a load safe for the soft brass? Or ditch the soft brass? How us/safe is it to shoot the soft brass?

Thanks Lars