Is thre a market for precision machined bullets where tolerances for each dimension are measured in a fraction of thousandth of an inch or better and weights to within a tenth of a grain may be the minimum acceptable. Precision bullets machined to exacting requirements out of tungsten could fill a niche for very long range tack driving. The bullets could be recovered from suitable backstops that collected the bullets without damage. The bullets would be so hard and indestructible that they could be reused with a little polishing.
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