I guess I have just been lucky for the past several thousand rounds of coated or lubed 9mm, .40S&W, 45acp, and .357 all loaded with Titegroup. Again, not saying there is no possible way, only saying that there's obviously more to it than just Titegroup. And I will say this again, if somebody experiences a double charge (or even an over charge) it is because THEY did not follow the simple directions as presented in their loading manual. It is NOT caused by the powder. Blaming the powder for a mistake caused by the operator makes as much sense as blaming the bullets because you seated them upside down.