Well I got to try out 20 shots at 500 meters on steel. They shot REALLY good! I used the same dope as the 139 scenars and they shot to the same point of impact. I expect them to shoot flatter as the distance increases.
I loaded 42.6grs H4350
Remington brass
Tula LRM primer
2.130" BTO
Down loading a picture of the plate...