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Where its set u can just feel them the odd 1 even a little tight am running 130s 53.5 is max book for 760

It's just odd that iv never in the 10yrs iv been loading for it had an issue bfor now

As per instructions on dies

Yes I brought 120 rounds of hormandy superformance ran them then started reloading with them

I understand what causes it vc I just can't understand y 1 lot would do it and the other half of the batch hasn't209399so 1s on the left have separated 1s on right were pulled but same batch

All casings are 3rd firing fired 1ce as factory ammo reloaded 1ce reloaded again and separating all been batch loaded 100 half had win primers other half had cci mag rifle is a Rem 700

This is in a 270 running 52gr of win 760 so 1.5gr below max book load and it only seems to happen in the 1s I used magnum primers in the rest are fine so far I've had 2 sleeve in the chamber and prob...

Was only made worse by using magnum primers standard primers good as magnums were causing them to split

I had twice fired hornady brass doing this to prob 5 out of 10 casings