The biggest variable in static testing of .22LR ammo is the crimp , and can only be done by destructive testing- pulling the bullet and measuring the tension .
When lots are tested, this is mainly what is checked, then test firing .
The difference in the various boxed match ammo, for example, Eley Club, Match and Tennex , would be the crimp consistency .
Cat
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Anytime I figure I've got this long range thing figured out, I just strap into the sling and irons and remind myself that I don't! 
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