Quoted:
i mistakenly bought remington 6 1/2s instead of 7 1/2s. could the 6 1/2s be used in 9/40 loadings?
xdmikey,
Let me first apologize to you. I should be more understanding that this is "an educational process." And thus, I shouldn't get so frustrated.
I apologize to you.
_________________________
So anyway, the way I was reading your question..........I figure, it's the same as asking..........
"I got Rem 6 1/2 primers. Can I use them for reloading 9mm and/or 40 S&W?"
My thought process..........(is this a trick question?)............
The Rem 6 1/2 is a small RIFLE primer.
The 9mm and the 40 S&W are PISTOL CARTRIDGES and will normally use a small pistol primer.
Hummm...........this entire thread.............revolved around the substitution of a Small RIFLE primer for a Small PISTOL primer...............when reloading pistol ammo.
The conclusion was............
YES, a small rifle primer can be substituted for a small pistol primer when reloading pistol ammo. BUT, remember to approach this as an "experiment." Precautions should be observed. Precautions such as..........reducing your loads for SAFETY (back off if you see dangerous signs), test some samples before going into full production, test with your handgun as it may not reliably set off the rifle primers, etc........
So, the answer to your question is: (copy and paste, the same conclusion here).
Aloha, Mark