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This last cartridge family is a family of relatively popular metric cartridges used here in the U.S. There are not that many really popular metrics here, I understand, but all of these would normally be found in most any ballistics or trajectory tables like what you'd find in a Shooters Bible or Gun Digest. One slight hint; the round on the far left is much newer than any of the others.

Well, here they are:

 

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To be of the same family I thought they had to have the same parent case. The one on the left is belted. I was going to guess that these might all be mauser loadings with the 7x57 as their parent except for far left.

Karl

As with some of the other "families" this one is not using the same case for the whole bunch. The ?X57 case is present though, in two sizes, if that helps any.

 

[turner]

1. dont know
2. 6.5x55
3. 7x57
4. 8x57
5. 9.3x62

How about if I told you the "don't know" case was brought out by Remington? The others.... VERY GOOD!! :thumbup:

 

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6.5 Remington Magnum?

Absolutely correct!! :thumbup: