tiny68
Visually reading cartridge cases for pressure signs is guesswork at best, you have variations in primer cup thickness and hardness. The one pressure sign I see used a lot at http://www.accurateshooter.com/ is the mark left on the base of the case by the ejector button. This is the first place you will see the brass start to flow and a sure sign you have exceeded the pressure for that brand/type of brass.
Below were fired in an AR15 and are over pressure signs, not to be confused with high port pressure or over gassing on a AR and brass swipes on the rear of the case. Pay close attention to your primers and for the circular ring indicating brass flow. And note that these signs will be fainter on military brass because it is harder. So again if you see the circular ring STOP IMMEDIATELY and wait for some .223 ammunition.
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