CZ 457 .22 LR Headspace: What It Is, Why It Matters and How to Adjust It
Headspace is one of those dimensions that is easy to discuss and easy to misunderstand. In a .22 LR rifle it is measured in hundredths of a millimetre, yet it can influence how consistently the cartridge is supported and ignited. That does not mean every CZ 457 needs to be shimmed. A factory rifle must […]
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