I have Hatcher's, guess it is time to drag it off the shelf and blow the dust off.

I also have Howe's High Velocity writings, I will likewise take a look to see if anything showed up. I recall he worked with two diameter barrels, in which the bullet was swaged about half way down the barrel upon firing.

Safety, yep, when I proceed to turning a barrel down in stages until destruction, I will be behind a berm with a pull lanyard!

All we need is a financier with deep pockets for the high speed photography.

I am still savoring on a visual description of Tinker's illustration. Nice analogy.

And a well polished finish is a requirement for revealing any OSR, so this will go into my test requirements.

Keep the thoughts coming.