Ugh...
Well that threw me into a rabbit hole.
I changed the zip/pipe guns to ROF 0. I changed the Double Barreled and Sawn-Off shotguns to ROF 1.
Then I started looking at the ammo for shotguns. And if it's not classed as a magazine, Foundry wants to apply weight to each shell... so I increased the capacity of loose shotgun shells to 25 and changed weight to 0.01, so that 25 shells weigh .25.
Then I went ahead and did that to all the loose ammo that's in the game (like 30-06 and 30-30)... but then I thought... why not have loose ammo for all ammo sorts.
So I made the same thing for each ammo sort in the game (with the exception of .50 cal and larger, which I set to 5 shells at .25 weight each).
And then I thought... this looks weird with all this loose ammo scattered in all the different folders.
So, I resorted all the ammo into Civilian Pistol Ammo, Civilian Rifle Ammo, NATO Pistol Ammo, NATO Rifle Ammo, USSR Pistol Ammo and USSR Rifle Ammo.
So... now everything looks much neater in my inventory section
I might go through and change all the Rifle ammo weights into .02 so that 25 shots is 0.5 in weight, so that rifle ammo weighs more than pistol ammo (because you can't have a lower weight than 0.01 in VTT)
We'll see...