Yes, they should stack just fine. A wide choke setting with burst or automatic fire is indeed very hard to dodge. Though it also has limited range, relatively low damage, and bad AP, but at least 'accuracy' is good.
Perfect for dealing with feral ghouls.
I've always found that a grenade launcher on BF or FA was a better way to deal with groups of feral ghouls. Especially in enclosed spaces. Also works well on bugs. Chunky Salsa > ITNW.
If you can't find the ears you can't collect the bounty! Stop wasting my new yen!!!
If you're dealing with groups of feral ghouls or ANYTHING involving bugs, you've moved into the area where survival > bounty.
I don't know what you have heard, but let remind you. Ain't no rest for the wicked. Money don't grow on trees. Those bullets you shoot'en ain't free.
There is always time for the Bounties. Always.