Magnapult 1.0 ammunition ideas

A brief message about this level, i like the Magnapult but is has a draw back over my cannon you guys may have seen featured in "80 bot instakill"... ammunition diversity. My cannon/catapult could use anything in the game for ammunition, from batteries to trees. The Magnapult, only a spike or metal ball... well till now. I've found ways to use high velocity fluid rounds,oil rigs! ,and heck even cows. Edit this level and post your own ammunition ideas for the Magnapult 1.0, I provided you a simple test graph, a row of 11 bots, and some rounds of my own design to test.
F-fire
X- chamber size
Y- time control (preset)
*!NOTE!, the cannon is set up for fluid rounds, delete the blocks at the end before changing ammunition!!!!
Post and enjoy♤
This test cannon is a derivative from the Electrogun from Golden and be sure to check out Golden's Electrogun level to see the slug rounds!