Tungsten is a very dense metal, and also very
durable, using tungsten to make a dart barrel results in a smaller dart
for the same weight. For anyone who plays darts often, the durability
is important, as that helps retain the dart's precision-machined shape,
grooves, and knurling.
However, brass is still used for inexpensive darts, which are large in diameter and the grip wears down quickly.
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