Magelo doesn't have kill data isolated just from Velious though. Also, it's not a good resource for drop % on no drop quest items because I'm pretty sure it only counts looted items or at least requiring you to keep the loot window open for long enough to the Magelo sync tool to catch it (a few seconds based on their instructions).
In the past 15 years, I wonder how many times VS has died and the old epic quest items left to rot or corpses not even checked except to quickly loot droppables which has polluted the overall drop %.
Not just for VS, I wouldn't trust Magelo for ANY no drop quest items from classic era quests that have no importance on Live servers any longer. Like this upcoming quest item, the Undead Dragon Sinew:
http://eq.magelo.com/item/6478
Even Magelo says the drop % may not accurately reflect the actual drop chance in game.