Can anyone tell me what the constriction is on the Remington SF? I've been looking for one of these chokes with no luck. I did find one online and about fell out over the shipping rates. If I cant find one, what would be a good replacement? I'm going to be shooting TSS 1 5/8 number 9 out of a 870 with a 21" barrel and don't want to waste a lot of shells trying chokes.lol If anyone has a Remington super full choke they are not using and want to sell let me know..
Thanks
Billy