[mikld]

I've been on online gun forums for about about 12 years. This topic has been around longer that and I have never seen anything definative to prove it's (tumbling live ammo) detrimental in any way. I've read no "official" report from any ammo manufacturer, powder manufacturer, or any firearm manufacturer/importer, on any forum, website, or magazine article. No real info on powder "breakdown", but a lot of good theories (and so-and-so's brother's uncle reports). Until I see something official from Winchester/Olin, Hodgon, Allient, etc., I'll say tumble away...