Actually, I used AccuBonds for most of the break in but with Retumbo. I'm not in a big hurry to try them with US869 since Retumbo works so well for this weight. I got some decent groups:
They would have been better if I hadn't outsmarted myself with that fancy target...I found that small red dot annoying and hard to use--especially since most if it disappears when you hit it. [img]/ubbthreads/images/graemlins/smile.gif[/img] A larger dot is much easier to use....
Anyway, it looks like they should do just fine in the 1:9 twist 3-groove.