25" long by 1.06" diameter, 5mm/20 caliber, 1:12 twist, 416 stain steel, turned on centers, air gauged, stress relieved, button rifled, .201 bore/ .205 groove, weighs 6.0lbs.
Posted by John Bates on 27th May 2015
I bought one to do a 20 tactical AR-15 barrel. I contoured it, threaded and installed the barrel extension and chambered it. The first load I tried went .4 @ 100 yds for 5 shots off a bag on the hood of my pickup. It might be really awesome on a concrete bench with my standard benchrest set up. The Prairie Poodles are going to be in deep Dew-Dew.