Big Blast Reactive Target Caps

I purchased a bunch of "Charlie Allens Big Blast Target Inflator" caps that allow me to use old soda bottles as reactive targets. They're loads of fun, but pumping them up is kind of a pain. It occured to me that I might be able to use a CO2 bike inflator to fill them. Has anyone tried this? Get one of these:



and combine it with these:



and you might be able to quickly fill the bottles without any pumping. Just a thought.