Accidentally mixed up some 7x 57 surplus ammo with 8mm mauser. help.

[Mr Oni]

I ended up getting my 7mm out of storage and cycling every round in the can. Anything that wouldnt cycle I deemed to be 8mm.

 

[Mr Oni]

Hey thanks for posting that

8mm on the right, 7mm on the left. Seems like it should be pretty easy to eyeball them once you found one of each. View attachment 454015

Hey thanks for posting that the ammo I have seems to be the height.

 

[Mr Oni]

Thanks eveybody for your responses! Well the rounds that wouldnt cycle all appear to be the same. Ill try the bore method mentioned above.

 

[mawkie]

As someone who sells and services precision balances for a living, this is my go-to solution. Better balances will have a check weighing function where you can program them for a go, no-go range. Anything that falls within the programmed tolerances gets an "OK" or green light. Makes it fast and easy to sort.

 

[Growler215]

From the pic, doesn't look like the 7mm will chamber in the 8mm either.

 

[lazarus]

Maybe ill take the ammo to my gun store and ask them to sort it. I am pretty sure its 90 percent 7mm ammo i bought at a gun show 10 or more years ago.

Get a 7mm ammo checker. You are talking like $20.

If it fits in the ammo checker, then it is 7mm. If it doesn't, it is 8mm.

You are being redirected...

Or as mentioned, visually the difference is fairly clear.

The head stamps should also clue you in.

 

[Mr Oni]

Get a 7mm ammo checker. You are talking like $20.

If it fits in the ammo checker, then it is 7mm. If it doesn't, it is 8mm.

You are being redirected...

Or as mentioned, visually the difference is fairly clear.

The head stamps should also clue you in.

thanks for that! just what I need

 

[jimbobborg]

From the pic, doesn't look like the 7mm will chamber in the 8mm either.

It will fit. I got a 7mm in a batch of 8mm and got that "poof" sound when firing. Don't know where the bullet went tho.