Interesting conversation at the range several months ago discussing OCW, OBT and universal loadings that seemed to work in any gun. Was provided with the following recipe:

LC brass
25.0g of IMR 8208 XBR
Sierra 55g HPBT (#1390)
COAL to AR mag length 2.26"

I have fired it through both AR's and bolt actions with 16" to 24" barrels and 1:8 to 1:9 twist rates. All with outstanding accuracy at 100 yards - including a new factory second SS Axis that was shooting sub 1/2-MOA groups out of the box.

M