Re: A different kind of 300 Blackout pistol
Posted: Sat Jan 12, 2019 1:13 am
I had my first keyhole with the 3.5” barrel. It does not like 225g Hornady at well below 900 fps. I pulled it until I can build another barrel. Right now I have a 16” McGowen barrel in it. It is showing some real promise accuracy wise.