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Rifles, Reloading, Optics, Equipment
Gunsmithing
Timing a Barrel, how much impact in Long Range?
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<blockquote data-quote="J E Custom" data-source="post: 181144" data-attributes="member: 2736"><p>WOW!!!!</p><p></p><p>I though the reason for getting a custom barrel was to eliminate</p><p>these kinds of problems.</p><p></p><p>First I don't buy barrels that have been straitened .</p><p></p><p>There are a lot of custom barrel makers that don't straiten' they are</p><p>rebored to a larger size if they are not strait.</p><p></p><p>I place all of my barrels between bore centers and check run out before </p><p>any work is done. If it is more than .0005 mils I re contour the barrel true</p><p>to the bore.</p><p></p><p>Factory barrels are notorious for being straightened after being contoured</p><p>and thats one reason some wont shoot. The worst factory barrel I ever </p><p>saw had .057 tho run out in the middle .</p><p></p><p>As james said I have found LILJA to be one of the best and have not had </p><p>to recontour any of his fine barrels.</p><p></p><p>But I have had to re contour other brands ( only once ) then bought no</p><p>more from them.</p><p></p><p>If you buy cheep barrels they are probably straightened to hold down cost.</p><p></p><p>Buy only premium barrels and you shouldent have this problem.</p><p></p><p>And as far as supporting the barrels when contouring I use a travel rest</p><p>that attaches to the carrage and moves with the tool.</p><p></p><p>Some barrels are tapered off the centers but the breach end is not and </p><p>must be turned (breach end only) before cutting the tennon.</p><p></p><p>If a barrel has been straightened and and not re contoured I won't use</p><p>it.</p><p></p><p>Just my opionion</p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 181144, member: 2736"] WOW!!!! I though the reason for getting a custom barrel was to eliminate these kinds of problems. First I don't buy barrels that have been straitened . There are a lot of custom barrel makers that don't straiten' they are rebored to a larger size if they are not strait. I place all of my barrels between bore centers and check run out before any work is done. If it is more than .0005 mils I re contour the barrel true to the bore. Factory barrels are notorious for being straightened after being contoured and thats one reason some wont shoot. The worst factory barrel I ever saw had .057 tho run out in the middle . As james said I have found LILJA to be one of the best and have not had to recontour any of his fine barrels. But I have had to re contour other brands ( only once ) then bought no more from them. If you buy cheep barrels they are probably straightened to hold down cost. Buy only premium barrels and you shouldent have this problem. And as far as supporting the barrels when contouring I use a travel rest that attaches to the carrage and moves with the tool. Some barrels are tapered off the centers but the breach end is not and must be turned (breach end only) before cutting the tennon. If a barrel has been straightened and and not re contoured I won't use it. Just my opionion J E CUSTOM [/QUOTE]
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Timing a Barrel, how much impact in Long Range?
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