Radial and Axial cartridge case expansion explained (with lots of pictures)

[Edward Horton]

Yes its been covered before in great depth, just click on the link below

FEA Analysis of a Remington Model 7 action in 243 Winchester Caliber

The alternate title of this posting is called Stretching things to their limits, or why things break



A 10-32 Grade 8 socket head cap screw being pulled to failure.
The first view is the mesh and the second is the outline.
The mesh detail was removed during the axial loading to failure.
The contours are of effective stress. The failure stress is reached in the next to last view.

Cartridge cases are just like lug nuts.











The factory loaded .303 Winchester case below stretched .009 on its first firing, and gauges never lie.

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