Home Forums Hunting & Shooting Ask The Gunwriters MARCH column: Primer Flattening

That's out of my area, John.

If I was attempting to determine that primer appearance was a reliable indicator, it would be necessary that absolutely everything was uniform, test to test. All the components of the test cartridges, the firing mechanism, etc. In other words, you would have to positively eliminate differences in propellant/primer composition, case construction, ambient temperature differences, use a single test mechanism, etc. That's an awfully tall order. Temperature and pressure would have to be constant, cartridge to cartridge. If you could manage that, then change one thing at a time to see how much of an influence that change had.

I don't see how that could be done with our present technology.