Knurled brass piece?

[fyrffytr1]

I found this thing at a new site today. It's 1.5"s long and made of brass. The tip looks like it has a different metal in it and part sticking out of the base is plastic. It is heavy for its size. The base is not hollow. I tried digging it out with a dental pick. The indention is only about 1/16th of an inch.

 

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[fyrffytr1]

I know what it is. Part of a dart!

 

[jewelerguy]

yes what fyrffytr1 said, the barrel of a dart

 

[Back-of-the-boat]

Steel tip dart ferrule.