I have DeltaEnterprises bottom pour mold that almost exactly fits my K31's. I loaded up 50 of them and only about 5 fired. The rest show no primer contact at all. The rifle is all right, I fired Privi Partizan ammo without problem. The bolt was fully closed. I'm aware ofthat problem.
My best guess is that my Hornaday sizing die is set too low and shoved the sholder back, preventing headspace. Obviously the extractor does not hold the cartridge tight enough for it to fire.
Does anyone know of a solution short of pulling these down, annealing the necks. using my 8mm-06 die to upsize the necks and then resizing with the 7.5 die turned up a bit? Yeah, I know I have to do this trial and error with the rifle in my lap.
Anyone else have a problem with Hornaday 7.5 Swiss dies?
I supose I could just reload with a different boolit! Headspace on that.