Donald McRonald said:
Personally, I like even a little smoother action and cycling even if you don't. I like to be able to cycle whatever regardless of differences in factory shell length.
While I understand what you mean, an action tends to get smoother with use.
Nor have I had a problem cycling any shells out there through any of them regardless of brand, and regardless of age whether new or used.
Some people I know speed up the process of "wearing in" a new gun by hand by sanding with 600 or 800 grit paper, or honing with a stone if you don't have the patience to do it behind the trigger.
I have a few shotguns that the action are smooth as butter and the trigger pull is just about as perfect as I would ever expect a factory trigger to be.
Case in point, I have an old stevens 12 gauge that is so smooth, you can point the muzzle up in the air and push the release with your finger and the bolt will open about 3/4 of the way just under its' own weight.
I don't think anyone here has said that any gun can't be improved upon in some way or another, and while this is a Mossberg owners forum, we are not so blind to not able to see or point out any true faults either. Matter of fact, I believe the members here are more than vocal about it.
One thing you may want to stop and really think about though. While many of us like to modify our guns in various ways, a company offering a service or product has to keep their doors open by selling whatever it is they're selling.
Maybe everyone is overlooking the shotgun market, but not many companies out there are marketing precision products for them. Likely, in my opinion, due to lack of demand.