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# Calling all smith's

#8
11-04-2009, 01:01 PM
 Platinum Member Join Date: May 2008 Location: South of Canada and North of Wyoming Posts: 5,404
Re: Calling all smith's

Thanks for posting that Chad, but what does that mean to me when I am tightening down action, windage and scope ring screws???

I tried hard to read through and understand... I really did... but when I got to about here my head started hurting...

Quote:
 Øm = minor diameter So, for example, if the minor diameter of a ½-13 thread = .4041 Devide this minor dia. by 2 = .2021 and then square this number = .0408 Multiply this number by pi .0408 x 3.14159 = .1283 square inches. Multiply that number by 110% (coarse thd.) .1283 x 1.10 = .1411 square inches. The actual tensile stress area is given as .1419 square inches from the chart. So you can see that the above method is very close — within 1% of the far more difficult calculation!
I use the FAT torque wrench and I usually exceed the the recommended torque levels. i.e., Rem recommends 65 inch/lbs on the Sendero/HS stock and the FAT wrench recommends 45. I use 65. I use 45 on the NF picatinny windage nuts and 25 on the alloy ring screws. Is this good or bad???

Thanks,

Mark

PS, I usually check my windage nuts after a few shots fron the 300 RUM after remounting the scope. Have found one or two a little loose after a few jolts from the boomer.
#9
11-04-2009, 04:04 PM
 Gold Member Join Date: Jan 2007 Location: South Dakota Posts: 753
Re: Calling all smith's

It means:

Guard screws using a 1/4-28 pitch get 40 inch lbs.
Scope mounts using 8-40 screws get 18 inch lbs.
Scope mounts using 6-48's get 10-12 inch lbs.

This is of course assuming the fasteners are made from a good material.

The "Unbreako" brand carried by Fastenal are pretty good.
__________________
#10
11-04-2009, 08:42 PM
 Silver Member Join Date: Dec 2007 Posts: 297
Re: Calling all smith's

WOW that is perfeck. I was looking for that about 2 years ago. that brings up pillers and bedding. When it comes to torque I know about that i am a mec. headgaskets and so on. torque WILL bend metal so if you keep changing your action screws torque it pulls and bends on the action right. so that why we bed rifles right. pillers stop that to. but if you are floating your torque all over the place what that going to do for accuracy. with using a torque wrench you can check it right at the range or ditch. the gess work is gone. thanks chad

Last edited by cva54; 11-04-2009 at 08:55 PM..
#11
11-04-2009, 09:03 PM
 Silver Member Join Date: Dec 2007 Posts: 297
Re: Calling all smith's

LOL you know the reason I asked about bolts way back Was I wanted to know if action screws were grade 5 or grade 8 and I still dont know. Gave up trying fig. it out just bought some 700 bolts.
#12
11-07-2009, 02:11 AM
 Silver Member Join Date: Oct 2007 Posts: 323
Re: Calling all smith's

Quote:
 Originally Posted by J E Custom To do it right you must in my opinion= Using a good lathe . Square the receiver face. Square the receiver recoil lugs Square the bolt recoil lugs. Square the Bolt face. Then lap the lugs just enough to smooth them. All of this is done before head spacing and assuming that the bolt is not to loose in the receiver. Next I would install pillars , float the barrel and bed the action. after curring time (48 hours) torque around 50+ inch pounds depending on the stock used. I may have missed something but maybe the guys will speak up and add to it. Or as ROY said get someone that knows how and have them do it. J E CUSTOM
Regarding bolt fit, I am curious, on M700 Action is it better to go with an aftermarket replacement bolt? I.E. a PTG? I am looking at my M700VS in 223 and thinking about having it rebuilt to either a 6.5mm WSM or a 7mm WSM. But then looking at the cost of the work on a M700, I wonder if buying a Stiller is a better choice?
__________________
Don

Snohomish Co. Washington
NRA Life Member
#13
11-07-2009, 12:35 PM
 Gold Member Join Date: Jan 2007 Location: South Dakota Posts: 753
Re: Calling all smith's

I think it'd be safe to say that any premium made to order (I hate the word "custom") action is going to be manufactured to a higher degree of quality than a bulk of the mainstream production versions.

What it boils down to is the decision largely depends on your desires and disposable income.

David Kiff makes a very good product and it's a certainty that it will work flawlessly so you really can't go wrong either way.
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#14
11-09-2009, 10:08 AM
 Silver Member Join Date: Dec 2007 Posts: 297
Re: Calling all smith's

Well ben out shooting and hunting my new rifle. (I love it) Shoots AWSOME the only work I can see is a good trigger job and pillers. How does this work on a conposet stock dont want to float yet just pillers.

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