Agree. Differences between the different .303 ammo:
A: 1940s, Corrosive Potassium Chlorate primers, Throat-erosive Cordite propellant. Cordite stable to store but naturally hard to ignite.
B: 1970s, Non-corrosive lead styphnate primers, Modern throat-friendlier ball powder. ?stability of ball powder, but 30+ years younger.
I wonder if the wartime ammo is made to military specs with a more rigid primer cup, and we experience more hangfires/misfires due to our Lee Enfields simply having weakened striker springs. Consider: it's not just the ammo which is getting older.
Here is a source of replacement striker pins for Lee Enfields:
https://www.ds-solutions.co.uk/lee-e...w-and-Unissued
There are setups out there that produce double and triple strength striker springs, one outfit in the UK was selling stainless or titanium striker pins - all in the pursuit of reduced lock time - important if you shoot your rifle unsupported (as in out in the bush not on the range with a nice table for your bipod).
https://www.firingpins.com/firing-pi...eld-firing-pin
But ask yourself, how far will you supercharge a Ford-T? Heh heh. (-:
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