Found some rounds making my rounds

[Varady NW FL]

Today I went down to a bridge on Rt 90 milton fl
and while making my rounds found some rounds. I know
nothing as far as what they go to maybe a 38 cal. I dug up
a dollar in clad and then I got sunk with a sinker, anyway
time for lunch and more to come
The letters R P 40 S & W are on the casing

 

[Ken from Atlanta]

.40 Smith and Wesson, it's a pistol cartridge, basically a cut down 10mm.

 

[willie d]

15 rounds of .40 S&W. That's a full magazine for a Glock model 22. I would be thrilled with that find. WTG