According to the UO Playguide: http://guide.uo.com/skill_0.html
"Player characters with Alchemy skill receive an inherent bonus to Enhance Potions that can exceed the 50% cap. The bonus to Enhance Potions equates to +10% for every 33 points of Alchemy (i.e., 80% at GM Alchemy)."
Has anyone tried putting a bunch of enhance potion items on and tossing pots at a peerless/doom boss/champion, etc?