A simple test for those who own and enjoy shotguns.
How was the original shotgun barrel diameter size developed and measured? That is, why is a 12 gage, 20 gage, etc. bore the diameter it is? What was used to develop and create this measurement? It is a common method used for all gages.
It will not work for a .410, which is a caliber and not a gage.
Hint: Once understood, it is simple and foolproof.
Any takers??
How was the original shotgun barrel diameter size developed and measured? That is, why is a 12 gage, 20 gage, etc. bore the diameter it is? What was used to develop and create this measurement? It is a common method used for all gages.
It will not work for a .410, which is a caliber and not a gage.
Hint: Once understood, it is simple and foolproof.
Any takers??

sigpic
Comment