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Long Range Hunting & Shooting
Help with a difficult bolt cycle.
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<blockquote data-quote="WildRose" data-source="post: 1329020" data-attributes="member: 30902"><p>You're thinking the same thing I am I bet, rough chamber/throat causing a slight stickiness?</p><p></p><p>I have a .260 LR DPMS with a custom barrel on it that required some polishing as when I first got it, shooting factory ammo the first round would stick so hard it wouldn't cycle at all and I had to pull hard on the charging handle and bang the butt hard on the ground or bench to break it loose.</p><p></p><p>Strangely enough I had no trouble after that but the first round was a bear.</p><p></p><p>Halfway between the neck opening and shoulder the brass showed a slightly raised ring about 25/1000 from where a burr ha left a corresponding gouge in the chamber.</p><p></p><p>Drilled out the base of one unfired hull, inserted a 1/4" rod and epoxied it in the hull and would alternate between it and some 0000 steel wool, both dipped in lapping compound which ultimately polished it to a mirrored, baby butt smooth finish.</p><p></p><p>Problem solved.</p></blockquote><p></p>
[QUOTE="WildRose, post: 1329020, member: 30902"] You're thinking the same thing I am I bet, rough chamber/throat causing a slight stickiness? I have a .260 LR DPMS with a custom barrel on it that required some polishing as when I first got it, shooting factory ammo the first round would stick so hard it wouldn't cycle at all and I had to pull hard on the charging handle and bang the butt hard on the ground or bench to break it loose. Strangely enough I had no trouble after that but the first round was a bear. Halfway between the neck opening and shoulder the brass showed a slightly raised ring about 25/1000 from where a burr ha left a corresponding gouge in the chamber. Drilled out the base of one unfired hull, inserted a 1/4" rod and epoxied it in the hull and would alternate between it and some 0000 steel wool, both dipped in lapping compound which ultimately polished it to a mirrored, baby butt smooth finish. Problem solved. [/QUOTE]
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Help with a difficult bolt cycle.
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