Lake City .30 Carbine Ammunition - Crack Test??

[USGI]

I recently saw a reference to Crack Test ammunition in one of the War Baby books. Is this the same as High Pressure Test, or something different? - Bob

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[Bill Hollinger]

Also called Proof Test and Crack Analysis. Usually used on larger calibers.

[USGI]

Also called Proof Test and Crack Analysis. Usually used on larger calibers.

Thanks, Bill. I thought it must be the same, but just wasn't 100% certain. - Bob