Sierra - 6mm 107gr HPBT Adapter Headspace is held to minimum

Headspace is held to minimum tolerances to avoid changing the case body length during full-length sizing

The most sought-after bullets among competitors on the Precision Rifle Series are now loaded into the industry's most trusted factory rifle ammunition

A few thousandths of an inch change between the bullet and the rifling can make the difference between average accuracy and real tack-driver performance

Notes: This base does not accept inserts and is used to help keep loaded rounds between the caliper when measuring with the Lock-N-Load Comparator (Sold Separately)

Sierra - 6mm 107gr HPBT Adapter Headspace is held to minimumSince its introduction several years ago, the 107 grain HPBT MatchKing bullet #1570 has been used successfully in a variety of competitive disciplines. This bullet has set new records and won national championships in such diverse competitions as National Match High Power and Silhouette. These competitions all have at least one requirement in common: extreme accuracy at long range. While they are recognized around the world for record setting