Greetings,
We have had great success throwing boulders from outworks with year with a pneumatic catapult. I say, "had" because we ran into a problem during Elims at DCHP. They changed the boulders. The new balls are stiffer than the older boulders. This difference changed the trajectory nearly a foot lower than what we were doing in Quals. I am shocked that the condition on the balls would affect the shot this much.
We took some slow-mo video of an old boulder(on the right) and a new one (on the left).
https://www.youtube.com/watch?v=dKPg...ature=youtu.be
We could use some different eyes on this problem. Your suggestions and comments would be appreciated.