Hi All,
Currently developing a load for 33xc in 30 inch bartlein for my AXMC. 299 Grain DTACs, H1000 110 grain, 0.001 neck tension, shoulder bumbed 0.002, 0.015 off lands.
When I fired virgin brass with same load (without body sizing) I did not get any pressure signs (except one odd ejector marks on some pieces) and velocity was ~3150. However in very next firing I am getting punctured primers, cratering, ejecter marks etc with same powder, neck tension and seating depth. The MV has also dropped to 3050. I bumped shoulder by 0.002 before reloading and the round chambered perfectly into my chamber without bolt handle freely falling.
I am trying to understand what might be going on here. If anyone has any hypothesis that they can share, will be great.
thanks
Currently developing a load for 33xc in 30 inch bartlein for my AXMC. 299 Grain DTACs, H1000 110 grain, 0.001 neck tension, shoulder bumbed 0.002, 0.015 off lands.
When I fired virgin brass with same load (without body sizing) I did not get any pressure signs (except one odd ejector marks on some pieces) and velocity was ~3150. However in very next firing I am getting punctured primers, cratering, ejecter marks etc with same powder, neck tension and seating depth. The MV has also dropped to 3050. I bumped shoulder by 0.002 before reloading and the round chambered perfectly into my chamber without bolt handle freely falling.
I am trying to understand what might be going on here. If anyone has any hypothesis that they can share, will be great.
thanks
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