Commander, the correct interpretation is you can shoot LOW pressure modern loads with the longer hull length without experiencing a pressure rise that will put the gun at risk. There is a pressure increase, just not a large increase. So your shell has to be well under the load the gun was originally intended to shoot. But why shoot the longer shells when RST, GameBore, Polywad and William Larkin Moore all have 2 1/2" shells available in correct pressures for your gun. Or as mentioned above reload your own with both pressure and length correct.
