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Long Range Hunting & Shooting
Copper removal ?
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<blockquote data-quote="Bruce Treloar" data-source="post: 1835224" data-attributes="member: 104002"><p>Have to agree with the above "Clean Barrels shoot best". Beware of copper eating solvents like Sweets as if left in a barrel over night can cause pitting in chrome moly barrels. Sweets is a fast acting solvent ideal for removing copper between competition shooting relays. The only way I can keep my rifles shooting well is by using JB fawn and JB blue non embedding jewelers rouge.</p><p>Shooters ask , will it wear a barrel out being a mild abrasive, well I'm yet to detect any loss of barrel life. However I see barrels ruined after one day out hunting.</p><p>Here's what I do:- Lets say we pick up a new hammer forged barrel Model 70 Winchester.</p><p>Then slug the barrel to gauge any tight spots hoping the patch becomes tighter towards the muzzle. Then cast a metal lap in the muzzle and lap the barrel with a 320 grade aluminium oxide grit making sure to work on any tight spots usually felt under screw holes and stampings. Cean out all the abrasive material till completely gone. Now with all the upgrades completed go to the range, fit your scope and adjust,, cleaning after each shot with Butchers, then fawn JB. Make sure all JB is removed before firing again. The barrel should now feel like pushing your foot into a knee boot full of sago. From here on the barrel will tell you how to clean keeping in mind it won't shoot when fouled with copper. I usually clean factory barrels after 5 shots and custom barrels no more than 10 shots. Use tight roll on patches so you can feel any copper build up. I can't feel anything when using spear patches.</p></blockquote><p></p>
[QUOTE="Bruce Treloar, post: 1835224, member: 104002"] Have to agree with the above "Clean Barrels shoot best". Beware of copper eating solvents like Sweets as if left in a barrel over night can cause pitting in chrome moly barrels. Sweets is a fast acting solvent ideal for removing copper between competition shooting relays. The only way I can keep my rifles shooting well is by using JB fawn and JB blue non embedding jewelers rouge. Shooters ask , will it wear a barrel out being a mild abrasive, well I'm yet to detect any loss of barrel life. However I see barrels ruined after one day out hunting. Here's what I do:- Lets say we pick up a new hammer forged barrel Model 70 Winchester. Then slug the barrel to gauge any tight spots hoping the patch becomes tighter towards the muzzle. Then cast a metal lap in the muzzle and lap the barrel with a 320 grade aluminium oxide grit making sure to work on any tight spots usually felt under screw holes and stampings. Cean out all the abrasive material till completely gone. Now with all the upgrades completed go to the range, fit your scope and adjust,, cleaning after each shot with Butchers, then fawn JB. Make sure all JB is removed before firing again. The barrel should now feel like pushing your foot into a knee boot full of sago. From here on the barrel will tell you how to clean keeping in mind it won't shoot when fouled with copper. I usually clean factory barrels after 5 shots and custom barrels no more than 10 shots. Use tight roll on patches so you can feel any copper build up. I can't feel anything when using spear patches. [/QUOTE]
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