Originally Posted By: Vol423
If an exceptional gunmaker were to produce his most perfect set of barrels, what would the convergence pattern be at various distances?

If he were "exceptional", he would ask what you were going to do with the gun, and at what distance you wanted to have them hit. IMO.

Originally Posted By: Vol423
Would the barrels shoot closer together until they reach their convergence distance, then cross and spread apart at longer range?

Yes.

Originally Posted By: Vol423
What would that ideal picture be at 10, 20, 30 40 50 and 60 yards?

That depends on what the customer wanted. Most of us get what we get, which is whatever the gunmake decides and whatever his effort results in. I think the commonly accepted goal is 40 yds.

Originally Posted By: Vol423
What is the optimum convergence distance for a 12 gauge upland gun?

Some of that depends on whether you hunt a flushing dog or pointing dog or just walk up birds. My preference for an upland gun would still be the common 40 yds...because, as Bill pointed out, who can tell an inch or two on the pattern board...and it becomes more important as distance increases that your POA is close to your POI.



As Birdman stated, a shotgun moves left and right when the gun is fired. As the gun moves, the shot is traveling down the barrel. Where the barrel is pointed when the shot leaves the barrel is what determines where it will hit. That's why a common .011 convergence would have the static (gun at rest) crossing point of the barrels at about 9 ft, but that obviously isn't where they hit when fired.

Last edited by Chuck H; 05/04/13 01:11 PM.