Make copper usable for bullet recipes that take copper pipe

Bullet puller disassembly recipes give copper, but no bullet recipes takes copper directly, and instead use copper pipe.

All of the disassembly recipes give copper and either lead or incendiaries in equal amounts, so I followed with the same metric for copper quantities.  This resulted in major inconsistencies in the amount of cu_pipe used as a component in the same recipes, so I adjusted the amounts of pipe.

* A copper pipe weighs 345g
* 200 units of copper weighs 400g

With that in mind, I adjusted (mostly downward) the amount of cu_pipe required in the recipes, with the cutoff at ~ 1 pipe / 150 coppers (assuming some waste)