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AndyC wrote:The C-lect choke works pretty well - I learned to shoot clays with one (my dad had it on his Mossberg 500 too) - the common nickname for it is "Dial-a-duck"

THAT'S what it was called. I couldn't remember that name of it for the life of me. I could remember "C-Lect", but I knew it was also known as "Dial-something-or-other". Thanks for the reminder.

You might try to find an older Mossy with a C-Lect choke barrel on it. My mother has one of those, and you simply crank the end of the barrel to change the choke. Just Goggle Image Search "Mossberg C-Lect choke" and see what comes up. It is odd looking, but it works. A whole used gun may be more affordable than just a barrel. I found that out when I went looking for an 18" barrel for my 500. Finally ordered one from Midway when they were on sale for $80 in December, and it took until April for them to ship it!