I will be coyote hunting and I am going to buy a box of this in either 3in or 3.5in. I will be using my Nova and my question is that is it safe to use the full choke even tho it says you cannot use steel shot but i am thinking it will be ok once i read that it is made out of tungsten, iron, nickle and two alloys and the reason why you can use a lead shot choke is because even tho it is a hard material it still has some give and it will conform to the choke as it is passing through but will spring back to form after leaving the choke. or would i be better off using a different size choke?