RCBS Neck Sizer Die Bushing 331 Diameter Steel
- L.E. Wilson Stainless Steel Chamber Type Micrometer Seater Die... $99.99 Available
- RCBS Neck Sizer Die Bushing 332 Diameter Steel... $11.99 Out of Stock, Backorder OK
- Imperial Dry Neck Lube Convenience Pak... $13.99 Out of Stock, Backorder OK
- L.E. Wilson Neck Sizer Die Bushing 333 Diameter Steel... $14.79 Out of Stock, Backorder OK
Neck Bushing Size (RCBS instructions):
Proper neck bushing size can be determined two ways. Measure the outside neck diameter of your loaded cartridge, subtract .002" to .003". This allows approximately .001" of brass spring back for correct neck tension. The other is to measure the neck wall thickness of your case, multiply by two, add the diameter of your bullet and subtract .001". RCBS suggests that you have neck bushings one to two sizes above and below your target diameter.