damage = sqrt of strength, Pain used to know this stuff

at 490(484 even) you do 22 damage, plus 4 from the sledge hammer means you're at 26. pali has soak of 25 so you do 1 damage per hit, and need to hit 2500 times...unless its already damaged
next point is at 529 so 1250 hits with SH
then 576(1 damage with a pickaxe) so 625 hits with SH
then 625(1 damage with a stone axe) so 313 hits with SH