Sinclair Bullet Comparator Insert 338 Calibre (0.338") Stainless Steel Rod Guide cartridge_270 Weatherby Magnum 220 Russian case is the

220 Russian case is the most popular brass for benchrest shooting

The Super Squeaker won't freeze up and includes a sound chamber for added volume and allows for an array of different tones

248 Package Quantity 100/Box

Scandinavian hunting and traditional rifle competitions

Sinclair Bullet Comparator Insert 338 Calibre (0.338") Stainless Steel Rod Guide cartridge_270 Weatherby Magnum 220 Russian case is theThe 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