Sinclair - Comparator Insert Barrel Off Ballistic coefficients are calculated by

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

prevents the cutting depth from creeping during operation

The Lock-N-Load Headspace Comparator extends brass life

Will fit all bolts in normal use today

5-21×44 FFP - DPRC-1 3

Sinclair - Comparator Insert Barrel Off Ballistic coefficients are calculated byThe 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