Headspace refers to the distance between the face of the bolt and the base of the cartridge in a firearm chamber. Proper headspace is crucial for safe and reliable firearm operation. Here's a concise buying guide to help you understand .308 headspace:
1. Importance of Headspace: Correct headspace ensures that the cartridge fits securely in the chamber, allowing for proper ignition, extraction, and ejection. Incorrect headspace can result in dangerous malfunctions, including misfires, slam fires, and ruptured cases.
2. Go and No-Go Gauges: Headspace is typically measured using go and no-go gauges. The go gauge represents the maximum allowable headspace, while the no-go gauge represents the maximum acceptable headspace beyond the go gauge. Using these gauges ensures that the firearm's chamber dimensions fall within safe tolerances.
3. Headspace Inspection: When purchasing a .308 rifle or having one serviced, it's essential to inspect the firearm's headspace. Gunsmiths or experienced shooters can use headspace gauges to verify proper headspace and make any necessary adjustments or repairs.
4. Barrel Replacement: When replacing a barrel or building a custom rifle, it's crucial to properly set headspace. Gunsmiths or barrel manufacturers can ensure that the new barrel's chamber dimensions match the specifications of the cartridge being used, such as .308 Winchester.
5. Safety Considerations: Incorrect headspace can lead to catastrophic firearm failures, endangering the shooter and bystanders. Regular headspace checks and maintenance help prevent accidents and ensure safe firearm operation.
6. Professional Assistance: If you're unsure about how to check or adjust headspace, consult with a qualified gunsmith or firearms expert. They have the knowledge, tools, and experience to perform accurate headspace measurements and make necessary adjustments safely.
7. Quality Assurance: When purchasing a .308 rifle or components such as barrels, bolts, or receivers, choose reputable manufacturers known for quality craftsmanship and adherence to industry standards. Quality components help ensure proper headspace and reliable firearm performance.
By understanding the importance of headspace, conducting regular inspections, and seeking professional assistance when needed, you can maintain safe and reliable operation of your .308 rifle for years to come.