Quote Originally Posted by charlie b View Post
I still think the 'shrinking brass' was related to the failed ignition. I've had it happen numerous times when a round fails to fire or with 'mouse fart' loads.

Interesting topic and worthy of its own thread…
Does anyone really know which direction a case expands firstly inside a chamber being fired? Does the case expand in radial to the sidewall then lengthen ? We know that when sizing a tapered case they always get longer before they get shorter because we can measure the results as we adjust the die but is that reversed during ignition ? IDk because I’m unable to observe during ignition.