Hornady Bullet Comparator Precision Measurement Kit w/ Inserts. Measuring casings based on the bullet's tip is a proven way to come up with inaccurate measurements something that can greatly impact even the most advanced reloading equipment. Instead of measuring across the tip use this specialized Hornady reloading tool to gauge a bullet's size based on the ogive for an incredibly accurate bullet size assessment. A thumbscrew attaches the Hornady Lock-N-Load Complete Bullet Comparator to your calipers allowing you to equip the appropriate bushing and get measuring. Hornady has included all 14 insert bushings in the Complete Set ranging from a .172 caliber bushing to a .458. To accurately measure and compare bullets of all sizes and shapes pick up the Hornady Lock-N-Load Bullet Comparator. Specifications for Hornady Bullet Comparator Complete Set: Caliber: Bushings for .172 .204 .224 (5.56mm) .243 (6mm) .257 .264 .277 .284 (7mm) .308 .338 .358 .375 .416 and .458 Features of Hornady Lock-N-Load 14 Bushing Bullet Comparator: Measures bullets from base to ogive for more precise measurements Attaches to calipers with thumb screw Includes 14 bushing inserts for .172 .204 .224 (5.56mm) .243 (6mm) .257 .264 .277 .284 (7mm) .308 .338 .358 .375 .416 and .458 caliber ammunition Package Contents: Hornady Lock-N-Load Bullet Comparator Complete Set B14 Hornady Bullet Comparator Complete Set With Inserts for Precision Measurement