I think 13 is prolly average for them, but it doesn't matter.
Base missile damage at xp. lvl 1 is 2d6+12, and that is with
taking the 'treasure hunter line'. They get base 6 PV, 30 - 50
starting ammo, access to mithril skin, and a decent melee
attack to kill weaklings.
You can sprint them straight to the CoC and win the gladius
with no delays, not even healing (as long as you don't mind
using the naming bug/feature for the magi), not even wizards
can do that
Try a no-scum game with one.