Brass vs. Steel Cased Ammo - An Epic Torture Test

Via Oleg Volk

 

There are two major types of centerfire rifle cartridges available on the market today:

• Those which are loaded with steel, and
• Those which are loaded with brass

This seemingly simple variation has caused a never ending stream of argument, discussion, speculation, and questioning from new and seasoned shooters alike. Complicating the conversation are other variables that typically get lumped into the argument without proper segmentation, such as:

• The different coating options available on the steel-cased ammo (lacquer or polymer)
• The different projectile loadings available (copper jacketed lead, the bi-metal coating that most Russian manufacturers use, etc)
• The different propellant (gunpowder) burn rates

Our team decided to try something ambitious and daunting: to provide the best resource and data available to answer these questions once and for all through objective experimentation and observation.
 
We realize this is a lofty and borderline arrogant goal. We've done our best. Please keep reading to see if you agree.
 
Here's what we did:          

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