Don’t have a problem with the shot gun other than the caliber, let’s keep it at 12ga.
OK the idea that you have to have a 640 is just ridiculous, if you want to shoot 9mm then get one and take advantage of the higher capacity. My 365 SIG is just a tad bigger but not as wide and carries 11 rds.
Now we’re down to the 30-30. I’ll will have been walking this rock for 70 years next month and most of the time it’s been with a firearm either on me or beside me. More than 60 of these years involved hunting. I can’t tell you off hand how many rifles pistols and shotguns I currently have, and I damn sure can’t tell you how many I’ve owned over these years. What I can tell you is a 30-30 has never entered my house. Worse than mediocre ballistics and out dated for over 100 years.
Keep the Mossy just make it a 12ga.
Ditch the 340 and just get one of the small frame 9mm. SIG and Glock make excellent ones.
Put the 30-30 back on the wall where it belongs. Not a fan of the 308 but would probably have to go with that, some real nice rifles available in that caliber.
That's one thing I like about the 30-30; it's pretty much a short-range rifle. In the hands of one of the many morons who doesn't fully know what he's doing, at least you know its ballistics will limit the damage radius. [Note: I am not fond of hunting in "brush" if that means you cannot tell what is behind your target.]