The Hornady .25 Caliber Bullet Comparator Insert (Hornady part no. 425) snaps into a Hornady bullet comparator body to give handloaders a consistent, ogive-referenced length measurement instead of an unreliable tip-to-base reading. Made by Hornady, this insert is bored to match .25 Caliber bullets specifically, so the comparator body contacts the bullet at the same point on the ogive every time, regardless of tip shape or seating variance. Precision handloaders use ogive-referenced measurements to set seating depth relative to the rifling’s lands, which is far more repeatable than measuring to a bullet’s often-inconsistent tip. It’s a small, inexpensive piece of a much more accurate seating-depth measurement system.

Key Specifications

• .25 Caliber is the bullet diameter this insert is bored to fit.
• Works with a Hornady bullet comparator body (sold separately) to give an ogive-referenced length reading.
• Ogive-referenced measurement removes the inconsistency of measuring bullet tip-to-base.
• Compact, pocket-sized steel insert stores easily in a reloading kit.
• Reusable once matched to the correct bullet diameter for that caliber.

Frequently Asked Questions

What does a bullet comparator insert do? It lets a comparator body measure a bullet’s length from a fixed point on the ogive rather than the tip, giving a far more consistent reading for setting seating depth.

Do I need anything else to use it? Yes, a Hornady bullet comparator body, sold separately, that the insert snaps into.

Buy the Hornady .25 Caliber Bullet Comparator Insert

Order the Hornady .25 Caliber Bullet Comparator Insert from our Lubbock, Texas gun shop for fast, direct shipping to your reloading bench. Browse our full lineup of reloading equipment to round out your seating-depth measuring tools.