Good post and do note - When I dial in my guns at a specific yardage - and say the gun patterns well at 45 yards - all the while I was adjusting my open sights or my scope to get this done -
Before I put my gun away and while I am happy with that pattern - I do take a few more shots at 10, 20 and even 30 yards.
doing that gives me the confidence to know where this guns shoots!
I like them close - so close I like to see the fuzz in their heads!
And you are correct - even though I don't use a Mossberg - each gun is different even from the same manufacturer- one needs to do their own homework to find the correct choke/shot combination for that gun!
JW
Ps Winchester Supreme #4 -3 inch using a Carlson 0.665 extended choke in a Sp 11-87