Seems like the only problem remaining with putting spin on paintballs (specifically rifling) is the viscous fill. So I thought why not a solid gelatin fill? I'm not talking about gel like insole gel toughness, think more the consistency of Jell-O Gelatin. This would allow the inside to be "solid" why still being easy to break and not cause any more (i would think) pain that a regular pb.
a few problems however, like if the "jello" fill might spin in its own direction within the ball. If that happened, the same problem as the liquid fill would occur. I dono if this would happen because of the "imperfect sphere" of the paintballs. But if it did i would reckon you could give the inside of the ball a semi-rough surface to stop spinning, or attach small "bumps" on the inside (just a few) that wouldn't affect the outside shape, but would act as a stopper to movement inside.
the other main problem i see would be actually making the balls but ill let the engineers worry about that
a few problems however, like if the "jello" fill might spin in its own direction within the ball. If that happened, the same problem as the liquid fill would occur. I dono if this would happen because of the "imperfect sphere" of the paintballs. But if it did i would reckon you could give the inside of the ball a semi-rough surface to stop spinning, or attach small "bumps" on the inside (just a few) that wouldn't affect the outside shape, but would act as a stopper to movement inside.
the other main problem i see would be actually making the balls but ill let the engineers worry about that



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