L.E. Wilson Minimum Chamber Gauge Brass 308 Winchester

The L.E. Wilson Minimum Chamber Gauge is made with the same tight tolerances you have come to expect from all your Wilson Tools. Best used if you are loading ammo to work in multiple gun chambers of the same caliber. Wilson recommends using this in conjunction with the Regular Case Gage to prevent over-sizing. Gage verifies Min Chamber Dimensions and OAL for SAAMI. The purpose of this gage is to check your reloaded rounds to see if they meet Min Chamber Specs. Therefore, if your rounds do not enter the Gage, then this is pointing to an issue with your reloaded round against SAAMI specifications. On the other hand, if your rounds DO enter the Gage, but DO NOT chamber in your gun. This points to you having a very tight chambered gun and would assume either an improperly cut reamer or a chamber that was cut below Min Chamber Dimension headspace. This does NOT mean that your round will not chamber in your specific gun's chamber. This only means the round DOES NOT meet SAAMI Min Chamber ...