Home Forums Hunting & Shooting Gunsmithing How To Determine Whether Bore Is Corroded

That could be the difference in bullet jacket material as well. E

greetings, e,
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<br>you may be correct.
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<br>i was using 350 grain soft-points with the .458 win. mag., and 400 grain trophy bonded bearclaw sledgehammer solids with the .416 rigby.
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<br>the sledgehammer solids certainly look to be capable of leaving quite a bit of copper in the bore; whilst the soft-points look to be somewhat firmer in terms of leaving less copper streaks behind.
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<br>cheers.
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<br>te

You might want to be somewhat cautious on the high ammonia based cleaning solutions - Sweets / Shooters Choice Copper Remover etc.. At first you might think your doing some good, but in reality your very likely damaging the barrel if you don't follow instructions to the letter. For heavens sake, if your going to use strong ammonia based solvent, follow the instructions to the letter. As you probably guessed there are some good articles on barrel cleaning. Whatever you do, don't over do the cleaning. Lots of BR shooters are now using a Shooters Choice Kroil mix 2 or 3 to 1 ratio with Phos. Bronze cleaning brushes and always a bore guide. Keep in mind that factory rifle barrels on most guns are very rough and as such will always foul unless lapped. Shooting performance should be your guide. When storing the rifle in the old gun safe, a coating of Kroil in the bore is recommended. I personally try to avoid the high ammonia based solutions. I believe the "shooting Primer" a book from Precision shooting has some interesting articles on the topic. If I come across the specific article/s I'll advise.

One of the articles I was referring to in an earlier post was in the Benchrest Shooting Primer book (Available through various BR shops and Precision Shooting Inc. http://www.precisionshooting.com/). The article is by Jim Borden - (http://www.bordenrifles.com/) on page 337, entitled Observations on rifle barrel cleaning - June 1993 PS magazine copy). Copper removal can be an exercise in futility!