Several years ago,I read a post by Chuck H about a device that measured pressure as the load went from hammer down to exit the barrel.So, I bought the device-"Pressure Trace". Of course,it had to be connected to a computer.I could have done so by shooting out of an open window(I had 100 acres at the time), but I also bought a laptop. The result was: I checked low pressure commercial loads, factory AA, my own,and Wallyworld promos.I posted my results.The low pressure Armusa were supposed to be 5000 psi and I got 5200 psi. The Wallyworlds were about 8000 psi and so were the AA's.Comments: "Your device is not calibrated".Big deal.I still have the device and no longer the 100 acres.But, I can do it again at a local range. The real question is: Why are promo loads super hot? Do you think that they,the promo people would spend any extra, or just get by? If AA's function an auto, why would one spend extra for powder? Why is hard lead shot better, and harder still, steel shot worse? AS Alice said: "It gets cursior and cursior"(Alice-Through the Looking Glass and Alice- Underground),
