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Rifles, Reloading, Optics, Equipment
Reloading
Case Trimming
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<blockquote data-quote="AZShooter" data-source="post: 746776" data-attributes="member: 5219"><p>Once you have your cases the same length you may find that you won't have to trim them for many firings. All the chambers I have measured from custom to factory have chamber necks that are quite a bit longer than the case. It can very long in factory chambers and somewhat shorter in custom chambers. Naturally if you have the chamber dimensions you can do easily determine the end of the chamber and trim accordingly. </p><p></p><p>Even with the chamber dimensions I like to measure to absolutely know when the case neck is going make contact with the end of the chamber. You can do this with a sinclair chamber length plug or if you have a lathe you can easily made your own. </p><p></p><p>Varmint Al's webpage has a discussion as well as chamber plug dimensions, thanks Al:</p><p> </p><p><a href="http://www.varmintal.com/arelo.htm#Chamber_Length" target="_blank">Varmint Al's Handloading/Reloading Page</a></p><p><a href="http://www.varmintal.com/alath.htm#Chamber_Length_Gauge" target="_blank">Varmint Al's Mini Lathe Page</a> </p><p></p><p>Sinclair video that shows the chamber length gauge being used:</p><p></p><p><a href="http://www.brownells.com/.aspx/lid=15010/guntechdetail/Sinclair-chamber-length-gauge-" target="_blank">Sinclair chamber length gauge | World's Largest Supplier of Firearm Accessories, Gun Parts and Gunsmithing Tools - BROWNELLS</a></p></blockquote><p></p>
[QUOTE="AZShooter, post: 746776, member: 5219"] Once you have your cases the same length you may find that you won't have to trim them for many firings. All the chambers I have measured from custom to factory have chamber necks that are quite a bit longer than the case. It can very long in factory chambers and somewhat shorter in custom chambers. Naturally if you have the chamber dimensions you can do easily determine the end of the chamber and trim accordingly. Even with the chamber dimensions I like to measure to absolutely know when the case neck is going make contact with the end of the chamber. You can do this with a sinclair chamber length plug or if you have a lathe you can easily made your own. Varmint Al's webpage has a discussion as well as chamber plug dimensions, thanks Al: [url=http://www.varmintal.com/arelo.htm#Chamber_Length]Varmint Al's Handloading/Reloading Page[/url] [url=http://www.varmintal.com/alath.htm#Chamber_Length_Gauge]Varmint Al's Mini Lathe Page[/url] Sinclair video that shows the chamber length gauge being used: [url=http://www.brownells.com/.aspx/lid=15010/guntechdetail/Sinclair-chamber-length-gauge-]Sinclair chamber length gauge | World's Largest Supplier of Firearm Accessories, Gun Parts and Gunsmithing Tools - BROWNELLS[/url] [/QUOTE]
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