While in Fort Myers last week looking for 22LR ammo I came across 10 boxes of Remington Thunderbolt. No doubt many of you are familiar with this junk, but I was not. Bought all 10 boxes. It is the most fouling, nasty ammo I have ever seen. It was all I could do to get my brush down the barrel. I ended up pushing fouling pieces 1 1/4 inches long out the barrel. Stay away from this junk. If you are aware of other ammo this bad please let me know. I don't want to experience that problem ever again.