Hi all - a friend of mine has an old Interams Whitworth Mark X in 7mm Mag. Accuracy has been steadily worsening for a while; accuracy at 200 yards is now in the 6" range for five shots. Is it possible the barrel is shot out? How hard (and costly) would it be to rebarrel this rifle?

Thanks in advance!

Kevin

I would try a thorough cleaning with copper solvents and elbow grease before I rebarreled it.

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Life is more exitin' when yer stickin' suppositories inta a wildcats behind!

Try J&B bore paste, if it's that bad, get agressive with the barrel, how is the crown? Have you checked to see if your scope is loose?

Depending on the quality of barrel the cost could start as low as $200 and go up from there.

I'd check everything else first. My experience with Interarms barrels (223, 270, 30-06, 375) is that they are very accurate.

I use a combination of solvents and MILD abrasive cleaners. I soak the bore with "Shooters Choice" for 15-20 minutes, followed by a scrubbing with "Remington NON SOLVENT" type bore cleaner, followed by by a patch soaked in "Shooter Choice", followed by scrubbing with "Remington NON SOLVENT" bore cleaner, folowed by a patch soaked in "Shooters Choice" etc. etc.. I do this several times, then I run several clean dry patches through the bore. I then check for copper by running another clean patch dampened with "Shooters Choice" through the bore. If it doesn't turn blue after 20 minutes the bore is clean, run a patch soaked in "Kroil" through the bore. If it does turns blue, repeat the process. Follow directions for the abrasive type cleaners. Avoid getting them in the chamber, particularly the bolt lug recesses. I shove the bronze brush out of the muzzle, rap a patch around it and soak it with the abrasive cleaner. I never allow the patch with the abrasive cleaner to exit the chamber area, and I remove the brush from the muzzle end by unscrewing it. I have cleaned up bores that have not seen a thorough cleaning for 50 years or more with this method. It might take an entire evening, but it will come clean eventually.

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Life is more exitin' when yer stickin' suppositories inta a wildcats behind!