Precision reloading tool that attaches to any caliper to measure bullet seating depth from ogive to case base. Works with interchangeable inserts (.17 to .45 caliber) and pairs with the Hornady Lock-N-Load OAL Gauge for exact seating consistency.
The Hornady Lock-N-Load Bullet Comparator Body is an essential precision tool for serious handloaders who demand consistency in their ammunition.
This comparator body attaches directly to the blade of any standard caliper, transforming it into a specialized measurement instrument. By measuring from the bullet ogive (the curved tip of the bullet) rather than the bullet tip, you achieve far more consistent and accurate seating depth measurements across your entire ammunition batch.
This is the comparator body only (red housing). Bullet inserts are sold separately and must be matched to your specific caliber.
Consistent seating depth is fundamental to ammunition accuracy and reliability. By measuring from the ogive rather than the tip, you account for variations in bullet shape and ensure every round seats at exactly the same depth. This translates directly to tighter groups and more predictable ballistics.