Forming 6.5 Grendel cases into 7.62X39 cases

[DGP4]

I want to do some reloads in 7.62X39 using small primer cases that Hornady used to make, but I can't find any in stock anywhere. Since 6.5 Grendel cases are small primer, I was wondering if they can be resized or re-formed into 7.62X39? If so, what would be the best way to do it, specifically can they be fireformed or can they be resized in a full length die. Dimensions are pretty close but I have no experience in this type of case conversion! What say you reloading gurus?

 

[GLShooter]

I think you can probably just run em up in the die and have usable cases. The shoulders might not form out perfect but that first firing will fix that.

Greg

 

[DGP4]

Thanks Greg! That would certainly be the easier method. Do you think expanding the neck out from 6.5 to 7.62 would weaken them too much?

 

[GLShooter]

You won't have any issues there. They will be smith shirt but that won't cause any issues at all.

Greg

 

[DGP4]

Well, I guess I will just try resizing cases in a FL die and go slowly to see what happens.