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Rifles, Reloading, Optics, Equipment
Reloading
Best method to measure headspace?
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<blockquote data-quote="Lionel Boyd Johnson" data-source="post: 2993296" data-attributes="member: 110111"><p>I must respectfully disagree with MagnumMania regarding the RCBS Precision Mic. Even the readings on the same case will vary depending on how you screw it together on the brass. In addition, the headspace length markings appear not to be related to SAAMI specifications. I've been reloading rifle and pistol cartridges for over 60 years, focused on accuracy for long range and across the course rifle competition as well as hunting. The Hornady headspace comparator used with a good quality dial caliper will tell you what you need to know. Regarding the discussion of removing the spring loaded ejector (if your bolt has one) leaves out the issue of the feel of the firing pin and spring assembly - it should definitely be removed before testing for proper head space.</p></blockquote><p></p>
[QUOTE="Lionel Boyd Johnson, post: 2993296, member: 110111"] I must respectfully disagree with MagnumMania regarding the RCBS Precision Mic. Even the readings on the same case will vary depending on how you screw it together on the brass. In addition, the headspace length markings appear not to be related to SAAMI specifications. I've been reloading rifle and pistol cartridges for over 60 years, focused on accuracy for long range and across the course rifle competition as well as hunting. The Hornady headspace comparator used with a good quality dial caliper will tell you what you need to know. Regarding the discussion of removing the spring loaded ejector (if your bolt has one) leaves out the issue of the feel of the firing pin and spring assembly - it should definitely be removed before testing for proper head space. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Best method to measure headspace?
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