Art ...I beg to slightly differ -we find that the Aus 7.62mm milspec ammo(and 6.5x55mm swede too -incidentially) here IS fairly "hot" by our sporting and target reloading standards especially in hot conditions over 30 deg C, but the thicker cases can stand it and interestingly the aussie mil 7.62 mm rounds are never reloaded . Use of these rounds are now confined to the GPMG M60 - as the normal service round is now 5.56mm Nato.
The "Z" 9mm SMG round has been obsolete for 5 to 10 years, but it has also used in the Browning HP, still on issue and I agree it was 'over the top' in blast and felt recoil at around 1,350fps!
Interestingly and to further expand on my theme of some milspec ammo being variable in pressure etc, the British made .303BR Mk7 is a lot milder than the Greek Mk8, which was designed for Vickers MG and aircraft use. [So we do not recommend a steady diet of this Mk8 ammo in SMLE rifles of #1 variety for obvious reasons!]
So oils arn't always oils!
I feel it pays to be careful with "foreign" ammo in milspec of that country. A bargain may not always be so IMHO
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