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UPDATE: 7/31/2022 - Post #18
Let me preface this by saying the BCA is working with me on this. They have given me the option to return the upper for a new barrel, but I am doing what I can to maybe solve it first. I will add that there is an awful lot of copper on the bolt tail as well.
The picture above is about 3" from the muzzle of my 450 BM barrel which is on the complete upper that I bought from BCA in February. From the first swipe with a patch when cleaning the new barrel I noticed a roughness near the end of the barrel and just thought is was something that would shoot out eventually. Last week I decided that I was going to take a look and this is what I saw. It is hard to tell from the photo, but it is copper and just in that spot in the barrel. Per BCA instruction I went to work with five different cleaners, a bronze brush chucked in a drill and countless number of patches with just OK results. Here is where I have left it:
So now I am wondering why just this one spot? Could it have been cutter chatter? Or maybe the problem is further up stream and that is the spot in the barrel where the temperature is low enough for the copper to start to build?
Bullet has only been Hornady FTX both factory and reloaded. Also, I do clean all my guns after shooting but do not remove all the copper on purpose.
Let me preface this by saying the BCA is working with me on this. They have given me the option to return the upper for a new barrel, but I am doing what I can to maybe solve it first. I will add that there is an awful lot of copper on the bolt tail as well.
The picture above is about 3" from the muzzle of my 450 BM barrel which is on the complete upper that I bought from BCA in February. From the first swipe with a patch when cleaning the new barrel I noticed a roughness near the end of the barrel and just thought is was something that would shoot out eventually. Last week I decided that I was going to take a look and this is what I saw. It is hard to tell from the photo, but it is copper and just in that spot in the barrel. Per BCA instruction I went to work with five different cleaners, a bronze brush chucked in a drill and countless number of patches with just OK results. Here is where I have left it:
So now I am wondering why just this one spot? Could it have been cutter chatter? Or maybe the problem is further up stream and that is the spot in the barrel where the temperature is low enough for the copper to start to build?
Bullet has only been Hornady FTX both factory and reloaded. Also, I do clean all my guns after shooting but do not remove all the copper on purpose.
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