But... 14,000 PSI in a 28 gauge shell has a lot less back thrust than the same pressure in a 12 gauge. Simple physics. The 12 gauge has a larger surface area for that 14,000 PSI to push against. The strain on the gun's locking surfaces will be much greater with the larger round.-The 3.0-inch 28 Gauge, at 14,000psi is pretty high pressure for a shotgun tied with 3.5 inch 12 gauge for the highest within SAAMI.
Agreed on the bolt thrust. The higher pressure means greater setback on the payload though and that means you more likely to get deformed shot unless you run buffers and or harder shot. Not a big deal. The higher pressure is also likely to be harder on hulls. As with most things there is a trade off. The higher pressure is going to give better performance but at a cost.But... 14,000 PSI in a 28 gauge shell has a lot less back thrust than the same pressure in a 12 gauge. Simple physics. The 12 gauge has a larger surface area for that 14,000 PSI to push against. The strain on the gun's locking surfaces will be much greater with the larger round.
Valuable points to consider and well stated! All in all, I'll stick with a 12 gauge.Agreed on the bolt thrust. The higher pressure means greater setback on the payload though and that means you more likely to get deformed shot unless you run buffers and or harder shot. Not a big deal. The higher pressure is also likely to be harder on hulls. As with most things there is a trade off. The higher pressure is going to give better performance but at a cost.