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Damaged Bore!!??

 
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  #1  
Old 10-17-2008, 11:36 AM
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Location: Fort Worth, TX
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Damaged Bore!!??

I just returned from Namibia from a plainsgame hunt. I cleaned my rifles last night and found something disturbing.

A little background info on one of the rifles. The 338 RUM in question here is a custom made rifle, with a Krieger barrel. I had the rifle made specifically for this hunt. The rifle is a .5 moa rifle with good bullets, and has only had about 200 rounds down the barrel.

Here is the problem. When patching out the bore after brushing, I found a loose spot in the bore. The spot seems to be between .5 and 1 inch roughly 3-4" from the muzzle. When pushing the patch down the bore the patch is tight then the rod slips forward the above distance then feels like it engages the lands again. I used two different cleaning rods to make shure it was not some issue with the ball bearings in the handle making it feel like a loose spot...nope its in the bore.

I have not shot the rifle at a target since the first day of the hunt. What is the oppinion here? What could have caused this? I only fired this rifle 5 time on the hunt and never had an extraction problem which I would think would be caused if there was some sort of obstruction in the barrel that could have caused this. I am baffled, I wish I had a bore scope. I have also Mic'd the barrel around the loose spot looking for a bulge...nothing.

I Have ran no less than 8 patches down the bore of this rilfe every 20 rounds for 200 rounds over the last 4 months, point is I know what the bore feels like. The loose spot might as well be a hole in the side of the barrel.

Any Ideas, obviously the barrel is ruined I am just curious how this could have happened.
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  #2  
Old 10-17-2008, 12:48 PM
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Re: Damaged Bore!!??

Bore Scope it---then you will know.. PM me and I will do it for you......
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Old 10-17-2008, 12:53 PM
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Re: Damaged Bore!!??

Bore Scope it---then you will know.. Am gong to the ranch tomorrow all day to change the anti freeze on the John Deere but will be here all day today leaving about 6 tomorow and back on Sat afternoon.

A Krieger with a problem!!!!! I have got to see this!!
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  #4  
Old 10-18-2008, 10:54 PM
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Re: Damaged Bore!!??

Recommend you contact Krieger and do as instructed.
db
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Old 10-18-2008, 11:16 PM
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Re: Damaged Bore!!??

After much discussion and an examination -- bore obstruction. Calling Krieger will do no good.
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Old 10-19-2008, 01:16 AM
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Re: Damaged Bore!!??

Quote:
Originally Posted by Boss Hoss View Post
After much discussion and an examination -- bore obstruction. Calling Krieger will do no good.
Ouch! That's gotta hurt. Thanks for the follow-up.
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  #7  
Old 10-19-2008, 07:58 AM
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Re: Damaged Bore!!??

Update
. I had a friend look at the bore friday with a borescope and it was obvious that the lands had been flattened in the areea of the loose spot, although only on one side of the barrel, there was also a gouge full of copper in one of the grooves.

I decided to shoot the rifle before I sent it back to the smith (Gordy Gritters) to haved a new barrel put on. I shot the rifle today and before the damage the rifle shot a consistent 3 tenths three shot group with the load I took to africa. Today I shot the rifle and it shot just as well as it did before. I would have bet anyone a new barrel that it would not shoot at all. It is amazing that a rifle can shoot with this kind of damage to the bore. You can actually push the patch into the loose spot and pust it back and fourth without it makning the cleaning rod turn, like it is not even engaged in the lands...

Here is the group shot today. The shot on the right is the fouler or cold bore shot and the three shot group is the load I shot in Africa. The group size is the same as before the damage. I do not know how the barel can shoot with this kind of damage to the bore. I actually saw the flattened lands with my own eyes in the bore scope.

I am very happy with the results I just do not understand how the rifle can shoot just as well with the damage to the bore.......\
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