Not too good at math today are we jk

Anyways, it depends on draw length as much as weight so dont just account it all to weight.

It is typically noted that one pound of draw weight equals about 2.5fps(feet per second)

Say you two are both the exact same draw length, and shooting the exact same weight arrows with the same fletchings, but he is shooting 7 pounds more draw weight:

His bow will shoot an estimated 17.5fps faster than you. So in one seconds time, all things being equal, his arrow will have traveled 17.5 feet further than yours.

For draw length, it is noted that 1" of draw length is about 10fps.

So, even if you guys were pullling the same draw weight, same arrow weight, same bow etc, but he was shooting a 29" and you were shooting a 28", then he would be shooting roughly 10fps faster than you.

The draw weight determines the amount of time it takes the string to accelerate from full draw, to the static(not drawn) position, while the draw length determines how long that bow can accelerate the arrow.

I hope this was simple enough to follow, if not go ahead and ask again

Essentially, if all arrow weights and specs are equal, and the bows are the same, the one with the higher draw weight and draw length will be faster, and have a closer pin gap.

Just for a little critical thinking, say you and your buddy were shooting the exact same bow, exact same arrow weight and fletch. Say he is shooting a 30" draw length at 60#'s while you are shooting a 27.5" draw length at 70#'s.

Now whose bow will be faster???