RCBS Full Length Sizer Dies for bottleneck cases have vents to prevent case damage caused by trapped air and for excessive lubricant. Headspace is held to minimum tolerances to avoid changing the case body length during full length sizing. They have industry standard 7/8''x14 threads. RCBS has been a leading supplier of quality, affordable reloading equipment since 1943.
Specifications and Features:
Full length sizer