The Accurate Reloading Forums
How are barrels attached?
21 October 2005, 19:54
ScottHow are barrels attached?
After taking a few savages apart I am familiar with the whole barrel nut and how it works. But that got me to wondering how other barrels are attached, such as a 70, 700, 1903, M98 etc. Thanks in advance.
21 October 2005, 19:58
Ol` JoeSome are simply threaded and screwed in and others are pinned, depending of course on the design. M70, 700 screw in vs M710 pinned.
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21 October 2005, 23:01
KingfisherI thought the 710 was pressed on... hydraulically (could be pinned in addition to that though).

Joe covered all the differet things that I could think of.
22 October 2005, 02:42
Ol` JoeKingfisher may be right, I haven`t gave much attention to the M710. I do agree it`s a press fit but I believe I read somewhere it also had a retaining pin. There is one other, the Sauer M200/202 has the barrel retained with a "collar" or "clamp" that contains three screws you tighten to hald the barrel in place. The bolt in this action locks in the barrel its self and all pressures are transfered to the breech and the reciever is simply something to hold it all together.
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The trouble with the Internet is that it's replacing masturbation as a leisure activity. ~Patrick Murray
"Why shouldn`t truth be stranger then fiction?
Fiction after all has to make sense." (Samual Clemens)
"Saepe errans, numquam dubitans --Frequently in error, never in doubt".
22 October 2005, 03:40
yeshi
what about ruger 77 mk2 in 3006? is it threaded or another type of atachment to the receiver?
regards
yes
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22 October 2005, 03:57
Grizzly AdamsHello;
The important difference with the 710 is that the bolt locks directly to the barrel, hence no stress on the receiver. I've noticed that some barrels on the SKS are pinned and some are threaded. Obviously, unlike the Rem. 710, there is a lot of pressure working on the receiver.
Grizz
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22 October 2005, 04:09
Rick 0311I have a Remington model 541X .22 bolt action and it has a pressed on and pinned barrel. This isn’t anything new...nor is it necesasarily an inferior way to attach a barrel.
yes: The Ruger is threaded.
JD
24 October 2005, 07:47
rootbeerWe have ascertained that most barrels are threaded. I'd like to know to what torque value are they installed? I read in a post herein a year or so ago that two guys used a four-foot cheater pipe to loosen a Mauser barrel; the combined length of pipe and weight of the two guys hanging on it was 912 pounds-feet. It finally let go at that value. Oy...
rootbeer: I don't believe there is a specific torque used. That Mauser barrel was probably that tight because it was put together 60-80 years ago and had become rusted tight. I've pulled quite a few Mauser barrels, and I've had one that was as tight as described and some that took less than 100 ft-lbs to dismantle. The worst seem to be Browning A-Bolts because of the thread lock they use, or Eddystone Enfields which you're better off using a relief cut to prevent breaking the action.
JD
25 October 2005, 05:26
FjoldI see a lot of Benchrest shooters change barrels most are just snugged down enough to where they don't move when shot (now).
My gunsmith uses 30 ft-lbs as he claims that if you torque the the barrel in hard it stresses the front ring of the action and that people have actually twisted actions that way.
Frank
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25 October 2005, 18:24
sonofagunAre there any recommended thread compounds, oils, or grease to use on the threads?
Bob Shaffer
25 October 2005, 19:03
FjoldI always use some as I've seen a stainless barrel gall the threads in the action. Any of the commercial Anti-Sieze compounds work well.
Frank
"I don't know what there is about buffalo that frightens me so.....He looks like he hates you personally. He looks like you owe him money."
- Robert Ruark, Horn of the Hunter, 1953
NRA Life, SAF Life, CRPA Life, DRSS lite
25 October 2005, 19:21
ClemsonChassis lube works fine for barrel thread lubricant, as will any other good, high-pressure grease There is no need for anything exotic.
Clemson
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Gunsmith
26 October 2005, 03:30
ShopCartRacingTo add on to rootbeer's post.
I've taken off old Mauser barrels that have been through hell and they will sometimes sound like a 30-06 when they finally crack loose.
1000 ft-lbs to take off wouldn't be the worst I've seen.
-Spencer