Found the article on a website. Copyright warning there also. Should I just give link, or whole page, appears to be public website.

This article made sense to me, one who has no ballistic, thermodynamic background.

To me he is saying detonation is possible with some pistol powders according to the igniability (not the RQ) of a particular powder in relation to the 'system' limits.

This would explain some of the strange occurences I've been hearing or picking up on with Lil'Gun in some cartridges. A relative new powder, and folks doing things with it, it was not intended for.