I like blue dot, mostly. I've been able to get good accuracy out of it over the years, BUT I have had an annoying thing that occurs every so often using this powder. Apparently, sometimes I get a partially burned flake or two lodged in the cylinder gap, making cocking difficult. Once I work the binding flake out, everything is fine. Only happens in a blue moon or so, but is still a bit disconcerting. This has been true across multiple (clean)revolvers. Anyway else had this experience?

I have shot Blue Dot in my SRH 480 and SW 500 8-3/8" bll,no problems so far,you might have smaller than usuall cylinder gaps.
Sean

I've shot Bluedot mostly in 357's and haven't had a problem. I did try some in my 45 colt at lower pressures and it was terribly dirty.

Are you sure the problem is a stuck flake? Or are you getting high pressure driving the case back against the recoil plate?

I don't think it is a pressure problem as the loads were not very stout. 15 gr bluedot, 155 primer, WW case, 240 XTP (44 mag).

This actually happened yesterday with my new Ruger Bisley hunter in 44.

A related question: This is my first SS revolver. I noticed the powder/burned marks on the outside, forward portion of the cylinder on what the would be the top of each chamber when it enters firing position. The (6) burn marks were each about the size of primer. I looked closely at my blued revolvers, and could not find a trace of this residue. Is this a potential problem or normal for a SS cylinder? I've also noticed that the cylinder pin is a bit sloppier on the new revolver than on any of my other Ruger revolvers. However, accuracy seems to be pretty good...

I get the carbon marks on both my SS Ruger 44s,its probably not as noticeable on the blued. You can remove it easily with a little SS polish,Flitz,etc. Experimenting with the Titanium cylinder on my 329PD I discovered a non-abrasive pencil eraser will remove it also,I use the gum type. I put Belt Mountain pins in my Hunter and Accusport.
http://www.beltmountain.com/

The blue dots in Blue Dot don't burn, and could be sticking in your gap. Unburned powder of this flak variety should not be able to stick your cylinder.