The RCBS Steel Neck Bushing in .363-inch (brand part no. 81678) is one of the larger sizes in the RCBS bushing range, a self-centering, changeable bushing for Matchmaster and Gold Medal Match Series dies. Interchangeable bushings let the handloader choose the neck diameter that gives the bullet tension a load calls for. RCBS says proper bushing sizing reduces work hardening of case necks, prolonging case life and increasing accuracy when the brass is consistent. It is made in the USA.

Key Specifications

• The bushing diameter is .363 inch, one of the .001-inch sizes in RCBS’s neck bushing range.
• It is a steel self-centering, changeable neck bushing.
• It works in RCBS Matchmaster dies.
• It also works in Gold Medal Match Series dies.
• RCBS makes it in the USA.
• RCBS’s sizing rule is to subtract .002 to .003 inch from the outside neck diameter of the loaded cartridge to choose the bushing.
• RCBS suggests keeping bushings one to two sizes above and below your target diameter.

Frequently Asked Questions

What kind of brass works best? RCBS says the benefits of a bushing, less work hardening of the neck brass, longer case life and better accuracy, require high-end brass with consistent neck thicknesses.

Which RCBS dies take this bushing? RCBS lists its neck bushings for Matchmaster dies and Gold Medal Match Series dies.

How do I choose a bushing size? RCBS gives two methods. Measure the outside neck diameter of a loaded cartridge and subtract .002 to .003 inch, or multiply the case neck wall thickness by two, add the bullet diameter and subtract .001 inch.

Buy the RCBS Steel Neck Bushing, .363-Inch

Larger-neck cartridges need a bushing sized to match, and this .363 size covers that part of the range. Order it with other shellholders and die accessories from our Lubbock, Texas gun shop for fast, insured shipping.