Is this stuff ok to run thru a Glock 17? Is the copper washed steel harder on barrels than the copper plated or TMJ's?
MFS 9mm 115gr FMJ. Zinc plated steel cases. The projectile in these is copper washed, steel jacketed, lead core.
MFS 9mm 115gr FMJ. Zinc plated steel cases. The projectile in these is copper washed, steel jacketed, lead core.