US Model of 1917, Eddystone; Bore Condition
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US Model of 1917, Eddystone; Bore Condition


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Old 12-06-2011, 10:33 AM   #1
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Default US Model of 1917, Eddystone; Bore Condition

I wanted to post on the bore of my 95 year old Eddystone US Model of 1917 which is quite rough, but not as rough as it used to be.

I got this rifle from my dad 30 years ago and didn't think the barrel was quite as bad as it was. I used to check the bore by removing the bolt then looking through the chamber pointed at a light source or bright item such as a white piece of paper. Using that method I thought the bore was pretty good, it looked like a mirror.

It wasn't until a vigorous cleaning and a few pics with a digital camera that I was made aware of the true condition of my bore... Observe;

US Model of 1917, Eddystone; Bore Condition - General Rifle Discussion

US Model of 1917, Eddystone; Bore Condition - General Rifle Discussion

That was 1.5 years ago, after a 3 day cleaning marathon.
Either someone had thought they were getting the rifle clean, or just didn't care to. I am sure it had been shot using old corrosive ammo.

I didn't want to get too involved with expensive methods of trying to get the bore back into shape, I didn't actually have much faith in improving it to tell you the truth. So I decided to keep it clean and shoot it as I normally would.

Since I usually take one shot a day, (with whatever rifle I feel like shooting that day,) and would clean it after each use, the process was much like a barrel break-in procedure. Here is what it looks like today.

US Model of 1917, Eddystone; Bore Condition - General Rifle Discussion

US Model of 1917, Eddystone; Bore Condition - General Rifle Discussion


That is a lot better than it had been. It used to be so bad that none of my cleaning brushes would follow the rifling as I swabbed the bore; now they do.

It still copper fouls worse than any rifle I've ever seen but it shoots well.
US Model of 1917, Eddystone; Bore Condition - General Rifle Discussion
The square outline was where a white piece of cardboard was that I used as an aiming point.

I'll continue with the cleaning process as I have been, hopefully it will be even smoother in another year or so. I probably should measure some of the fired bullets, (or slug the barrel,) to see what the dimensions are.
US Model of 1917, Eddystone; Bore Condition - General Rifle Discussion


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Last edited by The_Kid; 12-06-2011 at 10:44 AM. Reason: added info for clarity
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Old 12-06-2011, 11:19 AM   #2
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Nice report... Nice grouping coming from open sites at 200 yrds with a very old rifle. Bore is looking very clean as well..


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Old 12-06-2011, 11:21 AM   #3
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How does it do when the load is not "Kinda hot"?

Pushing a bullet to the extreme (or upper limits) sometimes is not the best formula for accuracy.
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Old 12-06-2011, 01:27 PM   #4
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Considering that all US military 30-06 was corrosive up to about 1952, it is almost certain that your rifle ran a lot of corrosive ammo.

Bore looks a LOT better (nice photography, BTW). You might consider trying some JB's Bore shine- very mild abrasive used on a patch- to help smooth out some of the rough spots- but that is still very decent accuracy.
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Old 12-06-2011, 03:10 PM   #5
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My Arisaka was/is the same way.. I think I was the first to clean or shoot it from when it was taken in WWII.
You should get a actual bore light, it lets you see down the entire length of the bore, into chambers, a nice thing to have..

Im gonna try your cleaning method though.... The last couple of times I took the Arisaka out I learned it has a super tight bore and it fouled real bad with copper...
I was loading .310 bullets pulled from Mosin ammo that shot great with no problems. I bought some .311 bullets because .310 isnt easy to find locally and everywhere you read says the Arisaka takes .311-.312. But no matter how low I loaded it I would get pressure signs on my brass (sticky brass, flat primers), and it copper fouled bad - The copper almost fills the rifling, Im having a hell of a time getting it out....
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Old 12-07-2011, 06:55 AM   #6
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Quote:
Originally Posted by danf_fl View Post
How does it do when the load is not "Kinda hot"?

Pushing a bullet to the extreme (or upper limits) sometimes is not the best formula for accuracy.
I have no problems whatsoever accuracy wise when load developing for this rifle... or any of my rifles for that matter. The reason it is kinda hot is; this is how hot the load must be to jibe with the predetermined sight graduations.

I was tired of chasing POIs with temperature sensitive powders so I changed powder from IMR 4064, (which worked fine in the summer months,) to a supposedly temperature insensitive powder. I tried Varget first, but couldn't get the desired POI height, then settled on H4895.

...
Of course today was the first time I shot it at 38F, (42F colder than load development,) whereas the POI was 10" lower at 400 yards.


So I might as well use the mild load with IMR4064, because I'm going to have to carry a cartridge in my pocket, (keeping it warm,) when shooting during winter anyway.
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Old 12-07-2011, 07:08 AM   #7
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Quote:
Originally Posted by Trez View Post
You should get a actual bore light, it lets you see down the entire length of the bore, into chambers, a nice thing to have..
I have a bore light. A bore scope is what would probably do better than the camera I use now. But I can see the entire length with magnified images now, I just need to focus on the area I wish to capture.

Quote:
Originally Posted by Trez View Post
But no matter how low I loaded it I would get pressure signs on my brass (sticky brass, flat primers), and it copper fouled bad - The copper almost fills the rifling, Im having a hell of a time getting it out....
I would try slugging the barrel to see what the actual dimensions are. It could possibly use a 308 diameter bullet with no issues. I would run that plan by an expert before I tried it.
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Old 12-07-2011, 07:12 AM   #8
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BTW: Thanks for the compliments!
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Old 12-08-2011, 05:26 AM   #9
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I tried the Eddystone again at 400 yards today, but this time I warmed the cartridge before I shot it.


It shot right where it should have.

It looks like there really isn't a temperature insensitive powder... at least temperature insensitive enough to make the summer/winter difference.


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