Hey i was wondering if anyone out there knows of a shotgun slug that is called KO (knockout). I bought them at gander mountain and have not tried them yet. It says they can be used for rifled or smooth bore shotguns. I was wondering if anyone knew what some to the stats were on this type of ammo, like how fast they shoot, fps. They are 1 oz. 2 3/4 in a 12 ga. If any one knows any thing about them please let me know. Just wanted to do some checking be fore i go shooting.

thanks