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The Range
Rifle & Shotgun Discussion
barrel length vs velocity
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<blockquote data-quote="swampratt" data-source="post: 2778562" data-attributes="member: 15054"><p>A friend in New Mexico sent me a Brownells 90 degree face cutter and 11 degree crown cutter that you use with the supplied T handle.</p><p></p><p>It tightened groups a little bit 1/4 moa over the hacksawed barrel that i crowned with lapping compound and a marble.</p><p></p><p>I actually cleaned up my Mossberg 100atr with the marble and it shot better groups. Before it did not like boat tails at all. after the slight chamfer it grouped them just fine.</p><p></p><p>Old school primitive stuff but it does work.</p><p></p><p>If you cut it to 16 are there any laws to worry about,, what if it was a hair under 16"</p></blockquote><p></p>
[QUOTE="swampratt, post: 2778562, member: 15054"] A friend in New Mexico sent me a Brownells 90 degree face cutter and 11 degree crown cutter that you use with the supplied T handle. It tightened groups a little bit 1/4 moa over the hacksawed barrel that i crowned with lapping compound and a marble. I actually cleaned up my Mossberg 100atr with the marble and it shot better groups. Before it did not like boat tails at all. after the slight chamfer it grouped them just fine. Old school primitive stuff but it does work. If you cut it to 16 are there any laws to worry about,, what if it was a hair under 16" [/QUOTE]
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barrel length vs velocity
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