Just wanted to get this to most slingers,that's why i started a new thread.
Sooo,i just got 62 tennis balls for free from a local tennis yard. My gf asked them if they have unwanted damaged tennis balls, and they told us, that they'll have like 50,that they'll give away for free.
Probably some luck was involved too, and i was also thinking about this for a while,to play sling tag again with firends,and I asked and received.
The 62 balls are in much better condition than i expected. All in one piece, their only flaws are that they don't bounce well. Some probably lost their internal pressure\seal too,so they're softer,but they're perfect for sling tag.
So this is my heads up for y'all. Free,uniform shape and weight safe ammo for free. Can't beat this. Just ask around at tennis yards,indoor,outdoor, if they have some unwanted bad tennis balls. Even if you get ones that have fallen in two pieces, you could use them to make concrete balls. They'll weight around 130 grams.