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Rifles, Reloading, Optics, Equipment
Gunsmithing
Really stuck case
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<blockquote data-quote="Bullet bumper" data-source="post: 658970" data-attributes="member: 17844"><p>Good old Dad always come through. </p><p>The crown is important to accuarcy but you don't know how it may have affected accuarcy untill you shoot it .</p><p>If it starts shooting worse than before you may need it recrowned by a gunsmith. However you can try a few things yourself first . Find a chrome plated ball bearing big enough to not fit in the bore . Grind a flat on it and drill a hole in it so you can epoxy something into it to hold onto . then get some valve lapping paste and use the ball bearing to lapp the crown back to a neat chamfer across the ends of the lands.</p><p>Also you can purchase piloted crown cutting tools and lapps from Brownell's and others.</p><p> <a href="http://www.brownells.com/.aspx/cid=0/k=Crowning+tool/t=P/ksubmit=y/Products/All/search=Crowning_tool" target="_blank">Brownells Search : Search Results for "Crowning tool" - World's Largest Supplier of Firearm Accessories, Gun Parts and Gunsmithing Tools - BROWNELLS</a></p><p> </p><p>If that don't fix it then it's time to recrown it in a lathe with a single point tool .</p></blockquote><p></p>
[QUOTE="Bullet bumper, post: 658970, member: 17844"] Good old Dad always come through. The crown is important to accuarcy but you don't know how it may have affected accuarcy untill you shoot it . If it starts shooting worse than before you may need it recrowned by a gunsmith. However you can try a few things yourself first . Find a chrome plated ball bearing big enough to not fit in the bore . Grind a flat on it and drill a hole in it so you can epoxy something into it to hold onto . then get some valve lapping paste and use the ball bearing to lapp the crown back to a neat chamfer across the ends of the lands. Also you can purchase piloted crown cutting tools and lapps from Brownell's and others. [url=http://www.brownells.com/.aspx/cid=0/k=Crowning+tool/t=P/ksubmit=y/Products/All/search=Crowning_tool]Brownells Search : Search Results for "Crowning tool" - World's Largest Supplier of Firearm Accessories, Gun Parts and Gunsmithing Tools - BROWNELLS[/url] If that don't fix it then it's time to recrown it in a lathe with a single point tool . [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Really stuck case
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