Shotgun Choke Gauge

[airedale]

I have seen where many shooters have tested their shotgun's patterns and were not getting the coverage they expected for certain chokes and shells. I have found that many of the choke specifications labeled on some tubes and barrels are not exactly what they are supposed to be. I messed around yesterday checking all of my choke tubes and barrels of various shotguns I have with an American National Firearms choke gauge and found that many chokes are off a size at least according to this gauge which is reputed to be a good one. Some of my Full Chokes measured out to be Improved Modified and several others up or down a size. The bottom line is you may not be getting the pattern you want because your shells are not being choked the way you thought. 

The choke gauge can be purchased from Amazon or Ebay

Al

[Grouse]

I have one like that, but it's a few years old and made of brass.