MarkB
Legend
Okay, this isn't too hard to calculate. According to the SRD, actual weapon sizes (rather than size categories) are as follows: In general, a light weapon is an object two size categories smaller than the wielder, a one-handed weapon is an object one size category smaller than the wielder, and a two-handed weapon is an object of the same size category as the wielder.
Therefore, the medium black dragon corpse may be considered an improvised one-handed bludgeoning weapon for the large red dragon. I'd visualise it as equivalent to a flail, the red dragon wielding it by the tail, but probably the simplest equivalent is a club.
A large club deals 1d8 damage on a successful hit, and as an improvised thrown weapon, the black dragon has a range increment of 10 feet, giving it a maximum range of 50 feet.
Launching it from 450 feet, however, would definitely put it in the category of a falling object, and the dragon is doing itself no favours in aiming at a medium target from that range. It'll get close to terminal velocity over that distance, so launching force is irrelevant, and it will take almost a full round to drop that distance. I'd simply have the dragon roll an attack versus AC 5 to hit the right square, giving it a flat -20 to attack for the extreme range, and give the target a Reflex save to dodge, somewhere around DC 15.
Therefore, the medium black dragon corpse may be considered an improvised one-handed bludgeoning weapon for the large red dragon. I'd visualise it as equivalent to a flail, the red dragon wielding it by the tail, but probably the simplest equivalent is a club.
A large club deals 1d8 damage on a successful hit, and as an improvised thrown weapon, the black dragon has a range increment of 10 feet, giving it a maximum range of 50 feet.
Launching it from 450 feet, however, would definitely put it in the category of a falling object, and the dragon is doing itself no favours in aiming at a medium target from that range. It'll get close to terminal velocity over that distance, so launching force is irrelevant, and it will take almost a full round to drop that distance. I'd simply have the dragon roll an attack versus AC 5 to hit the right square, giving it a flat -20 to attack for the extreme range, and give the target a Reflex save to dodge, somewhere around DC 15.
