Does anybody give thought to the liability aspects of the practice? If you build one of these conversions and it then explodes, resulting in injuries, how are you going to answer the liability suit?

I'm not a gunsmith. I'm a lawyer. I wouldn't touch one of these conversions if it hasn't been proofed after completion.

I can imagine the summation:

Members of the jury, Mr. Curl took a gun designed for operating pressure not to exceed 11,000 psi and modified it, then loaded into that device a cartridge developing 28,000 psi (black powder equivalent). The gun then exploded, with schrapnel fatally wounding the person at the next station at the shooting range. Do you consider this a safe practice?

Curl