RE: Hunt with silencer/suppressor
You can legally own them in most states if you want to go through the hassle of getting one and then plunk down the money for the permit and then more money for the device.
I highly doubt it would be legal to hunt big game with though. Maybe varmint or predators at night. I would not go by what the regs say, I would call around and verify that is indeed legal to hunt with.
I'm not sure if you need a class three license for a silencer or not, but I know its close as far as paper work and price goes.
And a silencer on a centerfire will not be truly quiet. It will take some of the sound of it, and make it harder to locate the direction the sound came from but it can't make it totally quiet because of the sonic crack the bullet makes.
From what I understand some reduce recoil as well.
Paul