RCBS Matchmaster Bushing Neck Size Die Set Features The RCBS Matchmaster neck sizing die works with interchangeable neck bushings sold separately to let a reloader dial in exactly how much tension is applied to each case neck. This self-centering changeable bushing approach has been used by benchrest and long-range shooters for years because it keeps brass working to a minimum extending case life across many reloading cycles. A titanium nitride coated expander further reduces brass buildup and delivers smooth case extraction which helps minimize the amount of neck stretch introduced during sizing. Each die is machined from case hardened steel with precision-drilled and reamed internal surfaces then hand polished for a smooth reliable fit. Rounding out the set is the Matchmaster Competition Seating Die finished in a deep blued coating and built around a micrometer adjustable free-floating self-centering bullet seating stem. Its bullet loading window with a retaining system lets the reloader simply drop the bullet in and run the press eliminating smashed fingers or misaligned bullets during seating. The oversized adjustment knob carries large letters and hash marks making one-thousandth-of-an-inch adjustments both easy to read and precise to dial in. Built on a standard 7/8-14 thread this set gives precision handloaders consistent repeatable results on every loaded round. RCBS Matchmaster Bushing Neck Size Die Set Specifications Manufacturer: RCBS Model: Matchmaster Bushing Neck Size Die Set Caliber: .338 Lapua Die Type: Bushing Neck Die Set Expander: Titanium Nitride Coated Thread: 7/8-14 Available At: GrabAGun