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Posted: 5/26/2010 5:21:50 PM EDT
| My barrel wouldn't shoot, so I sent it back to the manufacturer and he examined it and said the reason was copper fouling. Can this really cause a barrel that should shoot a 1/2 inch at 100 yards expand to almost 2 inches? |
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Umm, more details please?
I.e., chambering, material, caliber, chrome lined, etc.? For a chrime-lined carbine barrel, copper fouling shouldn't be an issue. I clean the bore with a patch soaked with Hoppe's copper solvent and I've never had a problem. I'm not trying to shoot 1/2 MOA groups, either, though. |
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Quoted:
My barrel wouldn't shoot, so I sent it back to the manufacturer and he examined it and said the reason was copper fouling. Can this really cause a barrel that should shoot a 1/2 inch at 100 yards expand to almost 2 inches? Copper fouling or powder fouling can absolutely destroy the accuracy potential of a barrel. Years of benchrest shooting have demonstrated to hundreds of individuals that dirty barrels cause crappy grouping and accuracy........Sweets 7.62, Butch's Bore Shine, Hoppes BR, any number of cleaners will remove the fouling and allow you to produce better accuracy.......... If you are after the maximum in accuracy you have to be very exacting in cleaning, loading, primer and powder choice, seating depth, case preparation and so on............The barrel is just a start............then the work begins........llc |
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Okay, a few more questions:
1. Who is the manufacturer? Twist rate? Length/weight of barrel? 2. How many rounds did you fire through it? How many rounds in between cleanings? Did you follow a break-in procedure? What was your cleaning procedure? 3. What kind of ammo? What grain bullet? 4. What is your proficiency level, shooting-wise? What kind of rest were you using? Optics? Weather conditions? Range? Lots of questions, yes, but if you're talking about a match-grade or precision rifle, there are lots of variables to consider. The shooter's skill and ability play a big part in the overall accuracy of a given rifle––just because the barrel is capable of 1/2 MOA doesn't mean I can shoot it that well. 
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Quoted:
Okay, a few more questions: 1. Who is the manufacturer? Twist rate? Length/weight of barrel? Lilja, 1:8, 17" 2. How many rounds did you fire through it? How many rounds in between cleanings? Did you follow a break-in procedure? What was your cleaning procedure? 250 rounds, Yes-followed the break in procedure, never cleaned after break in 3. What kind of ammo? What grain bullet? All kinds of ammo, black hills in multiple grains. 4. What is your proficiency level, shooting-wise? What kind of rest were you using? Optics? Weather conditions? Range? Good shooter with .22lr, had friend who is excellent shooter also test, Optics - Leupold 6-18, then put on Nightforce 32 or 36x with different rings, calm days at a range Lots of questions, yes, but if you're talking about a match-grade or precision rifle, there are lots of variables to consider. The shooter's skill and ability play a big part in the overall accuracy of a given rifle––just because the barrel is capable of 1/2 MOA doesn't mean I can shoot it that well. |
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Quoted:
My barrel wouldn't shoot, so I sent it back to the manufacturer and he examined it and said the reason was copper fouling. Can this really cause a barrel that should shoot a 1/2 inch at 100 yards expand to almost 2 inches? Yes it can. There are many other things that will cause groups to open as well. I have gotten some good deals in the past on rifles with allegedly shot out barrels. Liberal applications of patches,jag, Hoppe's #9 and elbow grease fixed most of them. A cautionary word. Do not soak and let sit a chrome bore with any bore solvent containing ammonia. |
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