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lands and grooves...

They should be different in a accuracy point of view, a 22lr is .223 or .222 I forget ? A 22 magnum is .224 copper jacket, a lot of gun manufactures will supply a pistol with 22lr or 22 magnum cylinder, but the bore will be for the 22 magnum and you loose accuracy with the 22lr.

Clint

I hope thi helps
 
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