RCBS 7mm Backcountry Neck Sizer Taper Crimp 3-Die Set

RCBS built this three die set for the 7mm Backcountry, a SAAMI cartridge that runs at much higher pressure than conventional rifle rounds and uses a steel alloy case instead of brass. Because of that case, reloading it does not follow the usual brass routine, and the set is laid out for the different process.

You get a neck sizing die, an expander die and a taper crimp die. Neck sized cases are meant to go back into the rifle they were fired in. Load from published 7mm Backcountry data and follow the RCBS reloading instructions for this cartridge step by step, since habits from brass cases do not carry over.