Re: 300 jazz
I am not sure what the top end of this cartridge is. Being as this is the first wildcat I have done load developement on, I am being on the careful side.
Got advise from Joel Russo on how to measure my brass expansion at the base of the brass to help determine pressure. Also, watched primer cratering and bolt lift . Also, payed attention to bolt pressure it took to rechamber a once fired brass in relation to headspace.
Based on the 10-12 reloads I have on the brass, with the primer pockets still holding tight,I suspect that the 300 JAZZ could be pushed harder. However, I am satified with the accuracy and velocity of both of my loads.
Again, my 210gr Berger load is at 3150fps and shooting 1/2 MOA at 725 yards,
and the 240gr SMK is at 2850fps and 1/2 MOA as well. Have not streched it out farther than that yet.
Nathan Dagley of SSG built me a very accurate rifle.