yes a 35# bow will kill a deer as long as you get a good hit. also you must have a heavy arrow. i killed a deer at about 30 - 35 yards with my old 35# seneca bow with a bear broadhead, and brought him down well within 50 yds. you probably wont get a passthru but i find that when the arrow is still stuck in him as hes runnin, it will hit trees and branches and tear him up even more.

to put it simply, use a 35# bow as long as you KNOW you can make a good hit

good luck