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Bedding screws

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Optics Master
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    Posted: March/11/2011 at 05:45
Just have a Question for you guys about bedding screws.

How tight should the rear screw be? A freind says the rear screw shouldnt be very tight as this torques the action, does this make sense to guys? I tighten all screws as tight as possible, and dont seem to have any issues. What is everyones experience with this?

Regards Chris
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 8shots Quote  Post ReplyReply Direct Link To This Post Posted: March/11/2011 at 06:36
Hi Clock,
 
The rear screw should not do any work. On a correctly bedded action the rear tang should not move at all whilst you loosen or tighten it.
The barreled action should fit into the stock and the front action screw tightened to 65lbsinch. The rear tang should now not be raised in the air nor have any upwards pressure on it.
 
Having said this, the rear screw should also be torqued to 65lbsinch as it helps hold everything in place during recoil.
 
If the rear tang is under strain, then the action will twist and shot to shot accuracy will not be present.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Glock Quote  Post ReplyReply Direct Link To This Post Posted: March/11/2011 at 10:17
8 shots that's my understanding as well, that's why I tighten both the front and rear screws the same. The action can't bend if it's on a flat surface.

Regards Chris
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jonoMT Quote  Post ReplyReply Direct Link To This Post Posted: March/11/2011 at 10:26
I'm a little confused whether you mean action screws or bedding screws. As I've used them, bedding screws are headless screws (I've just cut the heads off 3" screws) like this:



While the rifle is being bedded, they're just meant to be used for alignment. The action and stock are not meant to be tightened together much. Otherwise the bedding compound will just ooze out and stress will be induced. When I've bedded rifles, I've just rolled tape around the barrel up on the forend of the stock until there's enough thickness to have the action resting on the end of the tang.

As for action screws, you don't want to overdo it. The most I've heard for any stock is 65 in-lbs. And it's not necessarily important to go that high. What's key is consistently tightening the screws. They might do well at 45 or 55 in-lbs...just so it's always the same and equal between the two. A good torque wrench helps.
Reaction time is a factor...
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Post Options Post Options   Thanks (0) Thanks(0)   Quote tman1965 Quote  Post ReplyReply Direct Link To This Post Posted: March/11/2011 at 14:59
+1 with jonoMT, If you mean action screws I usually go between 55-65 in lbs. front and rear. consistency is the key.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Glock Quote  Post ReplyReply Direct Link To This Post Posted: March/12/2011 at 13:58
Thanks for the info guys, sorry I should have wrote action screws. Friend was trying to tell me that you shouldn't tighten the rear screw as tight as the front. This didn't make sense to me that's why I posted the question on the forum.

Regards Chris
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jonoMT Quote  Post ReplyReply Direct Link To This Post Posted: March/12/2011 at 20:46
There are some rifles where that can apply. I had a Swiss K-31 that relied on the barrel not being free-floating. Groups actually tightened up a bit by backing off the rear action screw a half turn. But most rifles I'd think would be best off with equal torque on both.
Reaction time is a factor...
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Post Options Post Options   Thanks (0) Thanks(0)   Quote RifleDude Quote  Post ReplyReply Direct Link To This Post Posted: March/13/2011 at 17:14
Just whatever you do, if you have a rifle with 3 action screws, don't torque the middle screw down hard; just snug it only.  Its only job is to secure the front of the trigger guard.  If you overtorque a middle screw, it will stress the action, to the detriment of precision.

For most 2 screw actions, you can apply equal torque to both, but it is more important to get adequate torque to the front.
Ted


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Post Options Post Options   Thanks (0) Thanks(0)   Quote Glock Quote  Post ReplyReply Direct Link To This Post Posted: March/14/2011 at 03:05
Thanks Rifledude i didnt know that, and I'm specifacaly talking about my Ruger.

Regards Chris
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ed Connelly Quote  Post ReplyReply Direct Link To This Post Posted: March/14/2011 at 21:52
Originally posted by RifleDude RifleDude wrote:

Just whatever you do, if you have a rifle with 3 action screws, don't torque the middle screw down hard; just snug it only.  Its only job is to secure the front of the trigger guard.  If you overtorque a middle screw, it will stress the action, to the detriment of precision.

For most 2 screw actions, you can apply equal torque to both, but it is more important to get adequate torque to the front.
 
I was just about to mention the Model 70, but Rifledude said it. 
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