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by ErikBjare 217 days ago
In the case of BBs they need to withstand a fair bit of force, so I don't think it's about money. The biodegradable ones (PLA) on the market I've tried perform less well than their non-biodegradable alternatives and can shatter on impact, cause jams, etc.

I doubt you could make a hard enough cellulose pellet, maybe it's possible but costly, idk.