I am interested in my buffed out, enlarged character throwing objects and even people as weapons. What are my options to do so? The normal throwing rules don't appear to take strength or size into account when it logically seems like they should.
I'm interested in any existing Pathfinder rules on throwing people and nonweapon objects – how far I can throw them, what damage do they do (or take), et cetera.
Best Answer
Throwing As Usual
Under "normal" circumstances, a creature can throw an improvised thrown weapon.
This will take size into account automatically, as if you're of larger size you'd compare to weapons of larger size too. So if you're throwing a rock about the size of a mace, if you're Medium it would do 1d8 damage but if you're Large it would do 2d6 damage (see Tiny and Large Weapon Damage on the same page).
Of course if you go too large you get fewer throws.
Also, range.
This means your improvised thrown weapon can be thrown up to 50 feet (5 x the 10 foot range increment). Range isn't affected by size. Max range isn't affected by strength but accurate range is; those strength bonuses offset the range increment penalties.
Of course weapon size is different than creature size, so the intent isn't that you can throw a Medium creature if you're Medium; even a Small creature is larger than two-handed Medium weapons. If you had a pixie buddy you might make a case to the GM that he's the same size and weight as something in the weapons list so the thrown improvised rules apply.
"But but physics?" This is D&D, give it up or come up with your own creepy complex houserules like everyone did in the 1970s.
Pumping It Up
There are various rules options to allow you to throw larger items better, and especially to throw people.
The Throw Anything feat dispenses with the -4 nonproficiency penalty for throwing improvised weapons/objects. Follow it up with Improvised Weapon Mastery for a damage increase. Obviously all the other available ranged feats apply as well; if you want more range, more damage, more attacks, what have you, the *Shot feats are applicable.
The Raging Throw feat lets you use rage points to throw people into other people or things and it has damage rules specific to the feat. As a barbarian, this is probably your go-to.
The Ki Throw feat (and its various improved and other addons) let you toss an opponent. Rules for hitting and damage they take are explained therein. A monk in the pirate game I GM has this, he used it to toss a clay golem off a ship last Sunday.
The Awesome Blow feat, if you can make the STR 25 and size large requirements, gets you the ability to whack people around all the time on top of your existing attacks. It has Improved and Mythic versions too. I wrote a Brute prestige class I used in a 3.5 game based on the concept of growing to size Large and then getting this, starting from rage growth like unto Sláine's warp-spasm.