What is the dirtiest .22LR ammo?

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If I put more than 50rnds of ammo through a firearm, as a habit, I clean my firearms after every range visit. Especially .22LR which is an especially dirty caliber due to the unburnt powder leaving gritty debris and schmutz in any firearm.

But after buying a Remington Bucket O Bullets and seeing a bit more gunk coming out of the cleaning patch, I got to wondering, which ammo brand leaves the most residue in the barrel? I couldn’t find any videos on YouTube with any definitive comparisons, so I set forth to create my own.

I tested the following popular .22LR brands
CCI Mini-Mag
Remington Thunderbolt
Remington Golden Bullet
Federal “Range” Pack
Winchester Super-X