Jim,
I know Brent tried the OE and didn't get along with it. I don't know just how much he worked with it.
My results using it has been very positive using the 1.5, 2 and the 3F in the .40-64 has been very good.
I test with no compression to very heavy when I work with ladder loads. Here are some of the results I get.
This is with the .44-77, .45-90, .44-100 and the .40-65.
Yes they are all 180 and 200 yard ladder loads but I cant hold the verticals down with Swiss as I can with the OE, and it has a wide range using zero to heavy compression from what I see.
But I still order the Swiss also.
When I finish a match at 50% it's not the powder load it's just me. I just cant see and shoot well anymore.
Kurt