Sinclair Bullet Comparator Insert 7MM (0.284") Stainless Steel Bullet Calibre_17 Calibre even while under pressure

even while under pressure

Provides a more reliable alignment with no canting

A single stroke seats the gas check

378 Sectional Density 0

56 mm NATO

Sinclair Bullet Comparator Insert 7MM (0.284") Stainless Steel Bullet Calibre_17 Calibre even while under pressureThe 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