http://www.wowwiki.com/Spell_hit

Humm. Maybe im just seeing things. According to that in heroics with level 80-82 bosses my shaman would need only 53 to cap on the bosses and my paladin would need 132. I know for a fact my paladin on 80 trash gets his avengers shield and hammer of the righteous deflected and miss quite a bit. Enough that im posting this. He should be capped against 80 trash and is only like 20 away from bosses, unless getting blocked and deflected is something else entirely.