Gentlemen

I know that 8x57J is NOT BIG bore!
However due to the fact that the my first question was answered so well by Alf I am posting it here so that members that are interested in vintage ammo can see the pictures and learn from Alf and other members with knowledge on this subject.

I was "lucky" enough to find another batch of vintage ammo for my 1914 Mauser model M

There are two batches of Kynoch ammo.
10 boxes with the code "13 P Z" on the back and marked as "Non-rusting-caps" on the sides.

Also 8 boxes marked "13 K W" these 8 boxes are NOT marked on the side!

I also have some RWS 14,7 gr ammo.
I think those codes "J61V" are dates ja?
PS the RWS bos marked "K540" has a "S" stamped after the original J print. The ammo inside is "J" marked and the bullets are .318" Thas added "S" stamp is WRONG. Maybe the box is not the original one that goes with those 10 rounds, or maybe a dealer did not know any better and stamped the box!!!

Please educate us Alf

Cheers,

André

Regarding the Kynoch ammo:

13 P Z = 13 September, 1951

13 K W = 13 April, 1948
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"Serious rifles have two barrels, everything else just burns gunpowder."

I am a relatively new person to the 0.318-0.323 battle over the Mauser ammo, and the only way I've found to really tell the difference has been to mike the bullets. My expertise is with the 8x60, and there appears to be very little standardization in that variation at all. Mike your bullets, and then go forward from there. !!!!!!
LLS