Do not get a 9mm can, get one in 45. Easier to throw the hotdog down the hallway than throw a 45 through a 9 can. Plus you can get end caps for other calibers.
My suggestion:
1st: 22 can. Almost any good one. Get a bolt gun. Insane
308 can: pick one. Then your HD won’t make you go deaf
Last: 45 can. I have a Griffin Revolution 45 snd like it but they are all about the same. Pick a mount you like and go for it.
You’re welcome to shoot my stuff on your hosts (or mine) if you want.
Thank you. I'd love to take you up on that sometime. I don't shoot .308 anymore enough to bother but I do a fair amount of .223