Watching the Gameplay as a gamemaster I was angry with how shotguns have spray and here's why:
(Sorry The picture is a little large.)
The paper man has been shot 5 times by 1oz. Rifled slugs from 3 distances: 50yds, 40yards x2 and 25yds x2 (I think), I know It's not relevant to the post but I'm going for full disclosure.
Also, He has been shot by 5 times by 9 pellet 00 buck. from two distances 15yds x2 and 7 yds. x3.
All was fired from an 18" smooth bore with a modified choke (A mid range choke that will still allow the firing of a slug without blowing your choke out of the gun.)
The pellets are .32-.33 caliber, the pellet holes on opposite sides of the paper are from different shells. I know that in the distant future things might be different but if the shotgun is suppose to be similar to ours being hit by an individual pellet would be similar to being shot by a .32-.380 caliber pistol. This would probably be similar to the Autopistol. A damage rating of 1d10 would be appropriate if the target was struck by a single pellet.
The spray quality however is stupid. The 'Shotgun' with a range of 30m, and spray can hit every target in a 30 degree cone, which is roughly 15m wide at 30m and covers roughly 225 square meters. Where as a real shotgun at 30m might be twice as wide of a spread as the spread portrayed in the picture. With the potential to hit 9 seperate targets (Hopelessly optimistic), or one target several times (more likely).
At a distance of under 7yds. It would be very hard to hit more then one target, but you would do a lot more damage then 1d10+2 I think.
I propose the removal of spray from the shotgun entirely, replaced with 'Special' with something along the lines of:
8m and under Storm or improved damage
15m ability to affect targets adjacient to primary target albeit with only the potential to hit once.
at 25m+ a bonus to hit target by +10
And in zero gravity or void... don't even get met started.