Sinclair Bullet Comparator Insert 375 Calibre (0.375") Stainless Steel Bullet Dia (Inch)_0.312 The base size measures approximately

The base size measures approximately 6" W x 8"L

The "Poly" blocks are dishwasher safe for easy cleaning

This die resizes the case body

281 Sectional Density 0

Sinclair Bullet Comparator Insert 375 Calibre (0.375") Stainless Steel Bullet Dia (Inch)_0.312 The base size measures approximatelyThe Sinclair Bullet Comparator inserts are meant to be used with the Sinclair Bullet Comparator and Bump Gauge Body or Hornady Comparator Body. These inserts are stainless steel and machined with a taper and a short straight section to more accurately duplicate the chamber throat. This eliminates the wobble experienced with many comparators which have standard drilled holes. This design allows you to quickly and accurately measure and compare bullet