Hi, I haven't been on the forum in a while so have been browsing through some of the interesting threads. While I do not have a suitible camera to post a detail pic, a side by side exam of PowerPistol and 4756 looks like a match to your pics of BB's powder and 4756-All of which proves naught since BB says that it is non canister grade and therefore may differ in burning rate from what we buy........but I have found PP a great performing powder in.38 special at the current low levels of SAAMI pressure handbook loads.