[BBGun]

I don't have a clue about this 357 case. I was sizing and de-priming it and noticed a ring just below the mouth. I used a micrometer on the mouth and it is .356. It also is exactly at the length of a 38 special. I tried it in my 38 special. It fits perfectly. Why would someone do this? Is there a die that will size the mouth of a 357 to fit it a 38 special. It's either been tooled or someone has a die. Oh, also the headstamp has been filed off.
I can't believe someone loaded a 38 special to 357 mag load data. The case looks good, but I think I won't use it.
Anyone ever come across this?

 

[BBGun]

Thanks for the replies. I should have said it's a 357 case drawn down to at the lip so it will fit in a 38 special cylinder. I think some of the replies are correct. It looks like the someone had their crimp die set up for 38 special and ran the 357 case through it. On the other hand, maybe it was a blank. Strange looking case though.