K&M - Gage Pin Blocks 135gr Adjustable over a wider range

Adjustable over a wider range of 0

It will not attract dust or debris and helps repel fouling during shooting

a micrometer advances the spindle 0

Key lock security system

3) You want to pinpoint issues with your reloaded ammunition

K&M - Gage Pin Blocks 135gr Adjustable over a wider rangeGage Pin Block . 17 cal through . 50 cal. custom hole fit per caliber (7mm shown). Gage pins sold separately. Checking your Case Neck with Gage Pins: After expanding use the corresponding gage pins to confirm the neck sized as expected. The feel you are looking for is a light drag on the gage pin. When sized properly the gage pin will act as a piston as you push the pin into the case neck while holding your finger or thumb over the primer pocket. You