If you do a chamber cast of a factory barrel, you will find it is neither....
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If you do a chamber cast of a factory barrel, you will find it is neither....
They use a Wylde or one of the other hybrid chambers?
2 year-old thread that could use some honest updating.
Pressure data to back-up the claims.
http://www.luckygunner.com/labs/5-56-vs-223/