RSI Pressure Trace II Firearm Chamber Pressure System
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RSI Pressure Trace II Firearm Chamber Pressure System

If you're one of my regular readers, chances are you already know I do a lot of custom shotshell development.  In this article I'm going to introduce you to the Pressure Trace II, one of the tools I use to analyze my ammunition and determine chamber pressure.  This is extremely valuable to me in that it not only helps to establish whether a round is safe to use, but also how changing components, shot column height, or even the style of crimp can alter the pressure and performance of a shell.