it was in 3.5 yes.there used to be 'mighty composite' bows that let you add your Str to damage (not to hit) and had an increased cost per + of str allowed... I know they were in 2e I can't remember if 3e had them (I think they did). I know there was a third party 3e book that had a mechanical assist bow that just added to damage...
its size. A longbow is too unwieldy to use while you are mounted. If
you have a penalty for low Strength, apply it to damage rolls when
you use a longbow. If you have a bonus for high Strength, you can
apply it to damage rolls when you use a composite longbow (see
below) but not a regular longbow.
Longbow, Composite: You need at least two hands to use a bow,
regardless of its size. You can use a composite longbow while
mounted. Composite bows are made from laminated horn, wood, or
bone and built with a recurve, meaning that the bow remains bow-
shaped even when unstrung. All composite bows are made with a
particular strength rating (that is, each requires a minimum
Strength modifier to use with proficiency). If your Strength bonus is
less than the strength rating of the composite bow, you can’t
effectively use it, so you take a –2 penalty on attacks with it. The
default composite longbow requires a Strength modifier of +0 or
higher to use with proficiency. A composite longbow can be made
with a high strength rating (representing an especially heavy pull) to
take advantage of an above-average Strength score; this feature
allows you to add your Strength bonus to damage, up to the
maximum bonus indicated for the bow. Each point of Strength
bonus granted by the bow adds 100 gp to its cost. For instance, a
composite longbow (+1 Str bonus) costs 200 gp, while a composite
longbow (+4 Str bonus) costs 500 gp.
For example, Tordek has a +2 Strength bonus. With a regular
composite longbow, he gets no modifier on damage rolls. For 200
gp, he can buy a composite longbow (+1 Str bonus), which lets him
add +1 to his damage rolls. For 300 gp, he can buy one that lets him
add his entire +2 Strength bonus. Even if he paid 400 gp for a
composite longbow (+3 Str bonus), he would still get only a +2 bo-
nus on damage rolls and takes a –2 penalty on attacks with it because
his Strength is insufficient to use the weapon to best advantage. The
bow can’t grant him a higher bonus than he already has.
For purposes of weapon proficiency and similar feats, a composite
longbow is treated as if it were a longbow. Thus, if you have Weapon
Focus (longbow), that feat applies both to longbows and composite
longbows.
you have a penalty for low Strength, apply it to damage rolls when
you use a longbow. If you have a bonus for high Strength, you can
apply it to damage rolls when you use a composite longbow (see
below) but not a regular longbow.
Longbow, Composite: You need at least two hands to use a bow,
regardless of its size. You can use a composite longbow while
mounted. Composite bows are made from laminated horn, wood, or
bone and built with a recurve, meaning that the bow remains bow-
shaped even when unstrung. All composite bows are made with a
particular strength rating (that is, each requires a minimum
Strength modifier to use with proficiency). If your Strength bonus is
less than the strength rating of the composite bow, you can’t
effectively use it, so you take a –2 penalty on attacks with it. The
default composite longbow requires a Strength modifier of +0 or
higher to use with proficiency. A composite longbow can be made
with a high strength rating (representing an especially heavy pull) to
take advantage of an above-average Strength score; this feature
allows you to add your Strength bonus to damage, up to the
maximum bonus indicated for the bow. Each point of Strength
bonus granted by the bow adds 100 gp to its cost. For instance, a
composite longbow (+1 Str bonus) costs 200 gp, while a composite
longbow (+4 Str bonus) costs 500 gp.
For example, Tordek has a +2 Strength bonus. With a regular
composite longbow, he gets no modifier on damage rolls. For 200
gp, he can buy a composite longbow (+1 Str bonus), which lets him
add +1 to his damage rolls. For 300 gp, he can buy one that lets him
add his entire +2 Strength bonus. Even if he paid 400 gp for a
composite longbow (+3 Str bonus), he would still get only a +2 bo-
nus on damage rolls and takes a –2 penalty on attacks with it because
his Strength is insufficient to use the weapon to best advantage. The
bow can’t grant him a higher bonus than he already has.
For purposes of weapon proficiency and similar feats, a composite
longbow is treated as if it were a longbow. Thus, if you have Weapon
Focus (longbow), that feat applies both to longbows and composite
longbows.