I have a choke tube for my son's 20 gauge youth model 870. He hunted it for one year when he was 12. He is now 26. My daughter is going to hunt with me this year and the little 870 fits her nicely. I have ordered some Federal HW #7s 1.5 ounce. The choke tube has written on the side:
TTD 575. It is a flush tube, not extended. Bright silver color. I know for a fact that my son shot his first turkey with this gun at 26 steps and smoked him. Lead shot. I had set 35 steps as his limit after patterning. I have no recollection of the make and was wondering if anyone had any thoughts on what it may be. I am guessing it was a Remington brand, but I really don't recall where I got it. I will shoot it first and see how it does, but curious if anyone knows any more about them.
Put this in the wrong forum. Sorry.