Unless things calm down after the election of the President, ammunition and serious long guns are unobtanium. You have what you have at this point.
May not be exactly what you want but...ammo is another story.
Shotguns and hunting caliber rifles and ammo still available.
And everyone needs a .22LR rifle and a couple thousand rds.
Face it.
If you're not well stocked up by now you're way behind the curve.