Hoppes - Bore Guide Universal Jaw Widener The purpose of this gage

The purpose of this gage is to check your reloaded rounds to see if they meet Min Chamber Specs

The link for the special QC base plate for bench flush mounting is here Quick Change Flush Mount Base Plate

Available in sizes to fit virtually all reloading needs

not requiring the user to hold out in space

Hoppes - Bore Guide Universal Jaw Widener The purpose of this gageHoppe's Bore Guide Universal Keeps solvents from dripping into action and prevents excessive cleaning rod contact with the rifling closest to the chamber. Three interchangeable chamber tips to fit . 17 to . 416 calibre. Aluminum action collar fits . 695" . 700" (17. 65mm 17. 78mm) diameter bolt actions of any action length. Threaded brass pin locks the guide into the action in place of the bolt to allow proper cleaning from the breech.