Today I went out and 'invited' a chain fire.
Pulled out my ROA and loaded chambers 1 thru 5 with powder. I then loaded 1, 3, and 5 with ball, and 2, 4 with a wax bullet. Slathered crisco over the chambers on all.
Went out and capped 1, 3 and 5 and left 2 and 4 uncapped.
There should be no way on this planet that a flame could have gotten in to the things from the front.
Fired chamber 1. Everything went ok. Cylcled to chamber 3 and fired, both 2 and 4 went off as well!!!!
This is an ROA! they have nicely recessed nipples and thick walls between the nipples. The only thing that could have been detrimental, is that ROA's have good clearance behind the nipple to allow caps to fall off!
This was definately a flash over from chamber 3 to 2 and 4.
As soon as I got the chainfire, i checked the cap on chamber 3. I started to look at it as soon as i was pulling the hammer back. I had degreased and cleaned the cylinder so that any soot would show. I could see a soot buildup around chambers 2, 3, and 4 that wasnt there on chamber 1.
Chamber 1's cap had split a little, but was still quite firmly on there (had to use a pick to flick it off). Chamber 3's cap had 3 splits down the side and fell off very easily when i rotated the chamber.
I wish i had one of those high speed camera thingies. It would be nice to have a frame by frame slow motion of this phenomenon!
Fun Fun Fun!