How are you liking your Scorpion? I grabbed one, got the Form 1 back, and through a Rugged Obsidian on it. Probably my most fun gun to shoot. It loves the American Eagle 147gr. The Speer Lawman has been flawless as well.
I really like it. Zero issues at all, and as I'm sure you are aware, it suppresses extremely well. I made some minor modifications (grip, feed ramp polishing, ground the safety button down) and it's fantastic. It's probably my favorite rifle to shoot, and it's great for getting new shooters excited about the shooting sports.
I shoot a lot of CCI Lawman 147's through it too, just because I have a mountain of the stuff. No problems at all. I've stuffed mags full of miscellaneous hp loads, and no problems there either.