Feb 17, 2009 #21 W Woodycreek Handloader Aug 2, 2007 2,240 2 Thinking about a new barrel or complete upper for one of my AR-15s in 6mmX45mm. I can use .223 brass and and have the higher bc of 6mm bullets :grin:
Thinking about a new barrel or complete upper for one of my AR-15s in 6mmX45mm. I can use .223 brass and and have the higher bc of 6mm bullets :grin:
