I might be going with a Form 1 can. A friend went that route and I was as skeptical as one can be. Took him right at a month to get the stamp. Then he drilled the baffles and end caps, looks as good as all the Form 4 cans I have seen, I am fairly picky. It can be cleaned easily compared to a sealed can, and it is very quiet. His is set up for 300 WM, 308, and uses on his 6.5s. Change end cap and it works on his .223s. It is hearing safe, looks good, cheaper, easy to clean, fast turn.....
Yeah, I think the hunting rig needs one, I forget to put my plugs in on occasion...