Interesting reloading YouTube

[Newton]

As a matter of interest this what all this stuff looks like

Good Explanation;

Ammunition Pressure Testing

In Action;

M2 Improved Universal Ballistic Test Barrel Receiver

Watch the YouTube

Acquire One;

Small Caliber Universal Receiver

Test Equipment

Bill Wiseman Ballistic Test Barrels and Receivers


I am sure a good well equipped machine shop could make these tools