RCBS Universal Press Type Shell Holder #4 (7MM Remington Magnum, 300 Winchester Magnum, 338 Winchester Magnum)

RCBS Universal shell holders are produced from hardened steel and designed to properly align the case with the reloading die in single-stage and turret presses. They’re sized to fit specific case heads and capture 0.125 inch of the case head for proper SAAMI headspace.

And they are numbered for easy identification.