✅ SOLVED Large bullet... or slug?

[Phishfarmer]

It's shorter than any shotgun slug I've seen. Any ideas? Screwtip is for perspective.


Here is the other side:

 

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[smokeythecat]

It's a slug. The little dimple on the top is diagnostic.

 

[TheCannonballGuy]

You didn't actually say whether it is made of lead, or some other metal... but since you guessed "bullet or slug?" I'll assume it is lead. Yes, it's a slug, but more specifically, what appear to be rifling-marks on its sides suggest it is a fired Rifled Shotgun slug, similar to what's in the photo below.

 

[Phishfarmer]

Thanks for the info. Your pic is labeled "shotgun slugs 20th century...etc.." but the diameter of even a 20 ga. (.615") is considerably larger. Why is there such a difference? I do believe the thing I found is a shotgun slug, just curious.

 

[smokeythecat]

There are 10 and 12 gauge slugs out there too. I found a 12 gauge once with a little start on the top.

 

[TheCannonballGuy]

Phishfarmer, here is a Link to the shot gauge bore-diameter information you want. You'll find a match for your shotgun-slug's diameter there. Remember, the rifling-marks on it may slightly increase its original diameter.
Shotgun Bore Diameters