Ackley Bolt Thrust Tests.

I have long wondered about P.O. Ackley’s claims about bolt thrust.  I have started some tests to see if more modern tools can tell us more about bolt thrust than Ackley was able to learn from his test.  On page 139 of volume 1 of Ackley’s “Handbook for Shooters and Reloaders” he discusses pressure, and [...]