A .223/5.56 brush will work in .22LR firearms but may be a very tight fit.
This can be used to advantage when removing lead from a heavily leaded barrel, and it makes an excellent cleaning brush for .22LR chambers.
The .223-5.56 brush is perfect for the .22 Magnum.
When my .223-5.56 brushes get worn I "retire" them to .22LR firearms.
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