I posted this on another webpage a few days ago and never got the feedback I had hoped for so...I'll try it here.
The topic of conversation in the shop yesterday. There are very different ideas on the subject: one being that modern ammunition (ie. w/shotcups) almost obviates the need for any choke, the other is that factory chokes (especially those with the long parallel-sections past the constriction) are the only effective choke systems. The third path is that any constriction of the shot collumn is sufficient to achieve the desired effect of full(er) patterns at distance, even if the constriction is only at the last few fractions of an inch at the muzzle.
I've had the length shortened on the barrel on an older (and, more practical than valuable) gun to achieve two things: to shorten the overall length and weight of the gun and, more importantly (to me), to change the choke from full to now about light-modified. The gun is presently at 26 1/2-inches and has 10-points of choke, which at 16-gauge should be about right for my needs in the uplands.
Anybody else here ever play this game?