Oversized Chamber Experiment

[jmoore]

I wasn't allowed firecrackers or toy guns (no real guns in the house either).

See what happens when children are denied access to something?!!

If you don't want credit for the O-rings, that's fine.
All that fancy computer graphic stuff STILL doesn't give me an idea as to how oversized a chamber must be to create a likely case failure. Hence the "real world" (if low buck) experiment. Still have multiple scenarios to try, this was just a first step. Hopefully it will be of at least a LITTLE use...


Base dia didn't grow that can be measured w/ calipers. Nor do I have a set of blade micrometers, even at work, that measures in "tenths". Regular micrometer doesn't fit any more at the base due to the bulge even though it is a bit fwd.


To make useful case wall thinning measurements I needed a point of reference at which to return after firing, due to the thinning of the walls going forward. Plus I sold my handy-dandy RCBS case check stand a real long time ago, as it was no longer being used after the first flurry of activity. Time for another, I reckon. Too much trouble to build a dedicated rig, and I don't want to re-invent the wheel every test run.

Primers LOOKED normal after firing, FWIW. (Oooh, acronym thing. I'm getting all computer-y.)