Roster didn't say or advocate you could or should use shotgun shells loaded to 50,000 psi. His article said he tested an 870 barrel to destruction and it took 55,000 psi to blow it apart. He also stated in the article that it was unwise to use even mildly over pressure loads.
His words,
"However, keep in mind that mildly excessive reload pressures are continuously stressing the gun and contribute to high recoil levels. This in turn tends to eventually crack wood and begin to break little parts within the action and trigger group. So, it is never wise or safe – and nothing positive is ever accomplished – by firing modestly excessive pressure loads in any shotgun."
Last edited by mart; 10/06/19.
