Thread: suppressor pressure

Same powder ,primers and cases. Checked head space and case lengths. 175eld-x 64gns 2225. 2920fps with a magnospeed. 30thou jump. Dropped to 62gns for 2820fps. Same thing. Doesn't do it with muzzle break or straight barrel. A fired case is 20thou longer than un-fired factory brass. It seems to like 3thou or more shoulder bump or will do the same. Sent suppressor back and waiting for info back. Book max is 66gns for a 175 projectile but the eldx have a long bearing surface and stiff jacket so I realize they can generate the same pressure to get the same velocity with a few grains less powder. I reach the book max velocity at 62.5gns. Mind you the book may have a slower barrel or mine could be faster? As long as I make sure the shoulder is back 3thou I get no pressure signs at 64gns. Will up date when I hear back about the suppressor