Armor and Weapon weight multipliers for all of the size categories?

[harpy]

So this came up tonight.


The party came across a huge sized great sword and one of the players wanted to drag it back to civilization to put it into a temple to worship it.
The key thing that we were trying to figure out was how much does it weigh? With a lot of tugging, pulling and GM hand waving this was accomplished, but it would be great to get a more clear picture of how this ought to be calculated.


Pathfinder is a bit more vague about item weights that 3.5, editing out some details... what I can find is:


Tiny: x0.1*
Small: x0.5**
Medium: x1.0
Large: x2.0


*This is actually armor weight, but assuming it applies to weapons also. See page 153 of the PF Core rulebook, on table 6-8.
** Oddly enough, under goods and services, a lot of gear has a weight of x0.25 for small creatures, rather than x0.5, I'm not really sure why this is the case. The one-quarter weight rule for small equipment (not weapons and armor) is on page 159 in the footnotes.


For completeness, what ought the armor and weapon weights be for the rest of the sizes?
Fine: ?
Diminutive: ?
Tiny: x0.1
Small: x0.5
Medium: x1.0
Large: x2.0
Huge: ?
Gargantuan: ?
Colossal: ?

 

[Jhaelen]

I don't remember if there are any actual rules for this. Realistically, doubling size in every dimension would increase weight by a factor of 8 per size category above medium (and likeweise reduce it by a factor of 1/8 for each size category below medium). The first question is: is it realistic that size doubles in every dimension?
The second question is: Do you (or the game's developers) care about realism?

Is a giant's armor (i.e. Large armor) really twice as thick as a medium armor? Probably not. I guess, I'd use a factor of four as a rule of thumb.

 

[Ryujin]

I would go with:

Fine: Negligible
Diminutive: Negligible
Tiny: x0.1
Small: x0.5
Medium: x1.0
Large: x2.0
Huge: x4.0
Gargantuan: x8.0
Colossal: x16.0

 

[Wolf72]

what about range modifiers?

like having a tiny heavy crossbow?