Can casting feather fall on a ballista bolt make it travel farther?
Feather fall makes objects fall 60ft/round, but only vertically. So, if I cast it on the ammunition then fire, it would fall only 60 ft/round, meaning that it will fly farther because most of its velocity is horizontal, not vertical. I suspect that from a tower, it can hit the walls of a castle 1,200,000 feet away.
Would this work? Assume a caster level of 20, so it can be fire from a (20×60 =) 1200 foot-high tower and travel horizontally ×1000 faster than vertically.