Sure, wish I could answer your question about these particular shells. I've found that it's almost useless trying to call the manufactures for getting pressure specs on their ammunition. For the most part, I quit worrying about such things if I was running them through fluid steel barrels. On pattern welded barrels, I do like keeping the pressures down to error on the side of caution & be kind to the barrels.
I find it fairly easy to find loading recipes in the speed range mentioned below 10,000 psi and it's one of the reasons why I reload. I don't send my reloads off to get tested & simply pick a loading recipe from the powder manufacturer & make sure I select the correct bushings for throwing the weights listed for both powder & shot by weighing them when I'm first working up a load.
As a rule of thumb, you can count on factory ammunition being no more than the SAAMI maximum of 11,500psi, if your uncomfortable with that type of pressure, there are companies like RST who openly share pressure specs.
Another pet peeve of mine is I sure wish shotshell manufactures would get away from printing the outdated & useless black powder dram equivalent on their boxes and replace it with the pressure rating for the ammunition.
Last edited by dogon; 12/03/25 10:36 AM.
