There was a thread on here and I've been trying, unsuccessfully, to find it. It carried a link to an article written by a chappie who had tried his best, with several guns, to cause a chainfire and had been unsuccessful.
His research (valid or not, I don't know) led him to the conclusion that chain fires are not caused by flashover at the front of the cylinder but by loose fitting or missing caps at the rear.
If you think about it, the act of ramming the correct size of ball into the cylinder swages it to an interference fit anyway and it would take a very, very tiny spark to get past the lead seal.
I think that Tac may be the most experienced of us on this subject, perhaps he would give us his opinion if he reads this.
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Originally Posted by harricook
