There is an article in Handgun Digest that explains Copper Units of Pressure and the newer high-tech Piezo-electric conformal transducer. Ok, even if you are not interested in the methodology, the output data from the PE conformal transducer method could help you determine your next hunting rifle or handgun. Grab a popsicle, relax.
(You have to look behind all of that outer space stuff)
7 years 16 weeks ago, 1:27 AM