
Mossberg CS is full of it. Or my shotgun only holds 6 shells.
First of all, my 940 PT SPX is a wonderful gun that is as reliable as a hammer.
But, just like with some of the guns posted here, it will not hold 7 buckshot shells. So I emailed Mossberg CS. A guy named Brandon told me this was a possibility due to variances in shell construction and that this was pointed out in the manual. So I reminded him that most ppl don't read a manual until after they bought the product. But that is that so that's just too bad and I'm SOL. I replied lesson learned for my next shotgun purchase.
Now, in reading here, I have seen the BS they've told some of you who have complained. I've seen excuses like use US ammo only, or some ammo is out of spec. Not one reply to the customer suggested exactly what buckshot load will fit 7 in the mag.
SAAMI publishes the specs for the max dimensions of loaded shotgun ammo. Fold crimped shells max length is 2.40" Roll crimped shells max is 2.45" (about 2 and 7/16) so if your ammo meets these dimensions, like all of mine did, well your shotgun should hold 7 rounds unless Mossberg knowingly designed a magazine tube without considering ammo specs. I shared this information with Brandon and suggested that Mossberg change the ads for the 940 to include a caveat that their gun might only hold 6 shells and that will save them a lot of discussion with customers who drop $1K on a shotgun that doesn't meet advertised numbers.
I read the history of this model line and how Mossberg upgraded / revised it by incorporating lessons learned or complaints form the previous iterations so it baffles me that they did not address this issue that goes back to earlier versions.