Picked up a Ventilator Choke tube. Heard good things about them. I will be trying it in my Remington Special Purpose Turkey with a 21 inch barrel.I have a few questions about this tube, and welcome any feedback you have on suggested loads for this set up. Can you use with Winchester Long beards or Extended Range? Is the constriction .650? Finally, does it like 4’s, 5’s, 6’s or smaller shot? Thanks much for your suggestions…..