Thread: ADI book max’s

Originally Posted by grandpamac

Greetings again,
That is impressive velocity, much more than I would have expected. To be on the safe side you may wish to do a little test. Take two of your cases fired with that load and load and fire them ,with the same load, two more times. If the cases will still hold a primer after that then the load should be fine. If not then a re think is needed. A friend developed a cracking good load for one of his rifles. Great velocity, wonderful accuracy and no signs of pressure. Life was good. Unfortunately none of his new cases could be reprimed due to loose pockets. Rifles have been blown up with loads that showed no signs of excess pressure, one of the reasons I tend to use velocity as an indicator of pressure.
Regards Grandpamac.

Hmmmm- just to put some more context around what @grandpamac is saying - if I run this load in GRT ,it predicts 2961 fps with my cases, which have a middle of the road 30 grains of water capacity. Pressure is indicated at 69030 psi, SAAMI max for 223 is 55,000 psi. If you get a case with a bit less capacity or a weak case someone could get hurt . . . .