Description Hornady A.O.L Gauge Product Line The Lock‑N‑Load O.A.L. Gauge is universally acclaimed as the most accurate, easy‑to‑use and reliable method of regulating seating depth and the resulting "jump" to the rifling. Straight Model Item #C1000For all bolt‑action and single‑shot firearms, or any firearm with straight‑line access to the chamber. This model is preferred, as it is most precise and user friendly. Curved Model Item #C1550For all autoloader, lever‑action, or pump‑action rifles. Also fits all bolt‑action and single‑shot firearms. Inserts into chamber through ejection port. Not compatible with Adapter "D" or short‑bodied cases.
