Help IDing Bullet

[Ed-D]

Help ID'ing Bullet

I doubt this is very old, but I have no idea about bullets. I am just curious and hoped someone could help ID this and provide suggestions on how to ID bullets. This bullet measures about 8-9mm diameter and 16-18mm in length. I have to estimate because I am eyeballing it, and the bullet is deformed slightly.

The ruler scale is in cm's so each tick is 1mm.

 

[taz42o]

Not very old. Probably a 9 mm or a .380. They are very close in size. Some bullets you pretty much have to have precise caliper measurements, it always helps.

 

[NOLA_Ken]

It's a bit long for a 9mm or .380 slug. What first comes to mind is a fairly modern muzzle loader bullet from the hollow base, possibly .36 cal. or .40 cal.

 

[coinhound1983]

Rifled .20gauge slug?

 

[Gunrunner61]

Sorry I miss read the post. 8.5mm =.33 1/2 of an inch So kinda like a black powder .35 cal round maybe...............just my guess...........HH

 

[TheCannonballGuy]

Note that the mystery-bullet has a wide "shallow soup-bowl" base-cavity. No muzzleloader bullets below .50-caliber had that cavity. But many metal-cartridge bullets from the 1870s onward through the 20th-Century have that cavity.