Has anyone here have a take on Wilson's new AR 7.62X40 caliber. It's a 30 caliber? It's based on a 5.56 brass. Dies from Hornady for this caliber is a little expensive at $79 from Wilson. Brass prep is a trimmed 5.56 then sized in a 7.62X40 die. In 1:8 twist barrels can use 110gr to 150gr boolits.