Mj 1943 mvii

[danbailey]

Took the No. 4 Mark II out this Sunday for the first time...box of winchester, box of PPU and box of surplus....winchester and PPU cases looked fine after firing...the surplus-not so much....marked MJ (Australian) 1943 MVII
took a round apart with the kinetic puller when I got home -pics shown...
Guess this stuff is a wee bit old to be firing! (Although..it did fire and group just like the commercial rounds)
Probably going to pull the rest of it and use projectiles for reloading.

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[Frederick303]

Nothing wrong with the cases doing that, the necks are just a bit brittle when formed back in the day. Remember the case shoulders and neck were formed once loaded with cordite.

I have fired Commonwealth surplus since the early 1980s, and I saw that one cases back around 1982, they would occasionally show a neck crack and or a split right at the shoulder, especially on WWII surplus, but I have seen it on RL54, GB55 and RG from 1954 to 1956 headstamps.