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Posted: 12/16/2018 8:13:54 PM EDT
Got this marlin with full knowledge of its condition. How bad is this gouge of the bore in the goal of obtaining the greatest accuracy? I have no idea how the gouge was made. Lever guns are not exactly known for their moa accuracy, but I'm not opposed to making a project out of it.
Unfortunately, it is the 16" model so cutting it off would require cutting/crowning/threading/pinning the barrel, cutting back the mag tube half an inch, machining the sights and finding a .30 muzzle device svelte enough to fit overlapping the tube. A 14.5-15 would be one of a kind. 
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Posted: 12/16/2018 8:42:59 PM EDT
[#1]
You copied the wrong link. Grab the one that says direct link.
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Posted: 12/16/2018 10:20:54 PM EDT
[#2]
Wow. I don’t have anything useful but do you know how that happened?
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Posted: 12/16/2018 10:37:05 PM EDT
[#3]
Quote HistoryQuoted:
Wow. I don’t have anything useful but do you know how that happened? |
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Posted: 12/16/2018 10:54:43 PM EDT
[#4]
Counterbore the barrel til just past the gouge.
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Posted: 12/17/2018 1:05:52 AM EDT
[#5]
Quote HistoryQuoted:
Counterbore the barrel til just past the gouge. |
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Posted: 12/17/2018 1:41:16 AM EDT
[#6]
Counterbore the crap out of it! You could even get real fancy and machine in an integrated muzzle brake. I would counterbore then come in with a port up top that would take out that defect.
ETA: Actually, the counterbore itself might completely remove the defect. It's really hard to tell from the pics how deep it is. That would give you more freedom to design the brake however you wanted. I'm guessing it's a 30-30? |
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Posted: 12/17/2018 8:35:55 AM EDT
[#7]
Tons of Mosins have been counterbored...
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Posted: 12/17/2018 8:53:45 AM EDT
[#8]
Try backboring it like a counterbore, about 1/2", before completely reconfiguring the whole front end. If you can get it to shoot right without having to mess with the mag tube, that would be ideal.
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Posted: 12/17/2018 8:58:48 AM EDT
[#9]
Quote HistoryQuoted:
Counterbore the crap out of it! You could even get real fancy and machine in an integrated muzzle brake. I would counterbore then come in with a port up top that would take out that defect. ETA: Actually, the counterbore itself might completely remove the defect. It's really hard to tell from the pics how deep it is. That would give you more freedom to design the brake however you wanted. I'm guessing it's a 30-30? Simple solution. |
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Posted: 12/17/2018 8:35:16 PM EDT
[#10]
First things first: how does it shoot?
I've bought rifles and pistols with horrible bores, and I am sometimes surprised at how well they shoot. Sometimes not. |
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Posted: 12/18/2018 7:59:55 PM EDT
[#11]
Quote HistoryQuoted:
First things first: how does it shoot? I've bought rifles and pistols with horrible bores, and I am sometimes surprised at how well they shoot. Sometimes not. |
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Posted: 12/18/2018 8:37:53 PM EDT
[#12]
Quote HistoryQuoted:
Tons of Mosins have been counterbored... OP: Have a reputable gunsmith counterbore it and don't look back. |
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Posted: 12/19/2018 2:13:40 PM EDT
[#13]
Quote HistoryQuoted:
Try backboring it like a counterbore, about 1/2", before completely reconfiguring the whole front end. If you can get it to shoot right without having to mess with the mag tube, that would be ideal. Plenty of guns have many reasons their accuracy is limited. |
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Posted: 12/20/2018 8:41:42 PM EDT
[#14]
Thats a bad place to have a damaged bore. Counterboring sounds like the best bet for that.
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Posted: 12/20/2018 9:14:13 PM EDT
[#15]
Knock the chip off first. Then shoot it and see how it goes. Although I doubt the chip will hang up a round it is sticking out quite a bit and that much impact on the projectile will have an effect until it wears down.
Because there is rifling before and after the chip it will most likey be ok. There are always minor imperfections from bore to muzzle. That one is still only on one groove or land. Get it smoothed out. I bet it is fine. If not then back bore or cut, re crown. |
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Posted: 12/21/2018 4:09:49 PM EDT
[#16]
Quote HistoryQuoted:
Knock the chip off first. Then shoot it and see how it goes. Although I doubt the chip will hang up a round it is sticking out quite a bit and that much impact on the projectile will have an effect until it wears down. |
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