Sinclair - Comparator Insert Barrel Off The front length adjustment is

The front length adjustment is performed by means of a two-pronged buckle

Ballistic coefficients are calculated by Quick Target Unlimited Lapua Edition from V0 to V75 BC G1 for all rimfire

7 X 28FN to the largest Magnums

5-21×44 FFP - DPRC-1 3

prevents the cutting depth from creeping during operation

Sinclair - Comparator Insert Barrel Off The front length adjustment isThe Sinclair Bullet Comparator inserts are meant to be used with the Sinclair Bullet Comparator and Bump Gage 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. Our design allows you to quickly and accurately measure and compare bullet ogive to base as well as