Lyman headspace gauge for 7.62x39 rifle cases. Insert cases to verify they stay within safe minimum and maximum headspace limits. Identifies cases exceeding maximum length. Destroy any cases with excessive headspace.
Proper headspace is fundamental to safe and accurate reloading. This Lyman gauge helps you verify that your resized cases meet critical safety specifications before you load them.
The gauge features two critical reference points:
Simply insert your resized case into the gauge. If it fits properly between the minimum and maximum stops, the case is safe to load. If a case exceeds the maximum headspace dimension, it must be destroyed immediately.
Excessive headspace creates dangerous pressure conditions and can cause case separation during firing. By checking each case after resizing, you catch problems before they become safety hazards.
The gauge also identifies cases that exceed maximum allowable length, giving you complete dimensional verification in one simple tool.
Lyman recommends inspecting all bottleneck rifle cases after resizing. This gauge makes that critical inspection quick and reliable.