Alpha Munitions 6mm ARC Brass

[BD1]

Some more observations: I trimmed and loaded the 100 Alpha cases yesterday. The necks are a little rough on the inside, I could fell it when I ran the mandrel in and when seating the bullets. The primer pockets are VERY tight. I had to chamfer them a bit to seat the primers, and I used the bench mounted seater as I couldn't reliably seat them with my hand held RCBS seater. Also I could not hold the brass well enough by hand to run the pocket uniformer in. The tool fits so closely that it spins the case in my hand. Maybe after a firing or two I'll be able to uniform the pockets using a little Do-Drill for lube.