Got mine under 1 MOA. Added 5 hundredths to OAL maximum (because OAL is inconsistent with BTHP so I go by max of several rounds) and went to within a grain of max charge. 0.87" The new load is more accurate in my other rifle as well.

The bad news is I dumped another 8 pounds of powder. I thought 1500 SMKs was enough to shoot for a while. But nooo-ooo.