[edit: gah, forgot to finish my post. Stupid furry four-legged distractions.

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Yeah, I was thinking of something similar to that as well.
+1TN isn't serious, and I'd allow full combat pool and all that fun stuff. Just call it an "unfamiliarity" mod. Still kinda crappy but a decent workaround. Probably something that I would get rid of if they use the weapon enough times.
Not like a shotgun/rifle/assault rifle is something you'd want to use around town.
At best a shotgun is 6 conceal with say a franchi spas, folded stock, barrel reduction or the somewhat gimped Defiance T-250. (Why it loses a whole DAMAGE LEVEL from a BARREL REDUCTION is jackass to the max, but foolish people wrote most of these firearm rules so I guess its logical....Oh well. Yay for house rules.)
Conceal 9 under a longcoat of some sort isn't terrible I guess, but the noise you make certainly is.
Since I'm new I don't know if its a big factor. I like capsule rounds and I want to use them in shotguns for a REALLY CHEAP 8S stun attack. At 10 nuyen/10 rounds that's a buck apiece, and since all you lose is knockdown its a bargain.
Plus you can always put in pepper punch and get a really effective, non-lethal defense.
Plus a targetted shot with that SL2 is only TN4 and a free 8D stun. TN5 if you default, and since all you need a single hit, that's not too shabby.
What say the vets? 9 conceal boomstick or 13 conceal heavy pistol (morrisey Elite)?
Walking around town that's not really going to matter, and definitely not on a B&E run.
Additionally you can mount a bayonet. Dikote that sucker and its a Str+3S if attached underbarrel. Cutting the barrel will probably reduce the reach to 1, but a quick, efficient lethal means of dealing with problems would be useful.
unattached the bayonet is a standard knife, which is conceal 8 and StrL, so dikoted its Str+1M.
Doesn't seem too bad, especially since that's a SA/BF shotgun.