Thought some of you may be interested in the current project. HKI threw me into building a 200 yard Mac truck in an AR-15 platform.
450 Bushmaster chopped and necked to a .338-
300 grain@200 is hitting with 2574ft lbs.
Plugging in ballistics data the cartridge looks very promising for its intended purpose, but I'll begin live fire testing probably Thursday.
Brass forming process.