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Maximum torque requirements for riflesmithying?


AI Perfector

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I'm looking to buy a torque wrench for the various uses in connection with my various rifles, e.g. scope, chassis, barrel change. What is the maximum torque that I may expect to have to use on the rifle and / or fitted accessories?
Any recommendations as to manufacturers, models or torque wrench for above purpose. Not looking for the dog's ********, but want to avoid cheap and nasty.

 

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May be worth looking at getting two.

The small screws need mere inchLb whereas the barrel may require a significant number of footLb .

 

Yup, Redmist on The Stalking Directory reckons:

 

Rings, bases, triggers and stock screw you need max of 65" / lbs

Barrel Change will require 90 - 100 ft / lbs

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..and get a good quality breaker bar to crack barrels off, DO NOT use a torque wrench!

 

I use a Britool, American Precision and Snap-On torque wrenches although the AP is now out of calibration. Whatever you get look after it carefully and always back it off when not in use.

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Curious as to the reason?

im guessing to much force also you dont need a torquw wrench yto crack barrels off thsats not what they are designed for , you wqould use it when fitting a barrel not removing it

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im guessing to much force also you dont need a torquw wrench yto crack barrels off thsats not what they are designed for , you wqould use it when fitting a barrel not removing it

 

Ah, OK I understand now. Breaker bar to take barrel off but torque wrench to put it on. Correct?

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I was told by two gunsmiths that you do not need to torque a barrel to 90 - 100 ft/lb as it is unecessary.

So I do mine to 60-65 ft/lb for the 6BR, 6.5 and 284 barrels without any issue.

And I use the torque wrench to undo them as well. Your choice as to what you do but that is mine.

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A torque wrench should not be used for undoing things, certainly not a barrel which has been subjected to rain and dirt and numerous heat cycles and stresses. It is very easy to exceed the maximum rated torque of a wrench when cracking a barrel off hence the use of a breaker bar.

 

My M41 Actions have the barrels 'torqued' up by hand, a quick flick of the wrist is more than adequate and even the M59/M66 actions need very little more.

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Buy the Borka, specifically designed for precision rifles. Great piece of kit.

Thanks, Looks simple (which is good - KISS principle adhered to!) and finer tolerances that some others. Do you know of a UK supplier and if so would you provide details? A quick web search does not give any UK based hits. Thanks in advance.

 

Update: 0808 10Oct13: Eureka.

 

Country United Kingdom Company Brock&Norris Address Unit G2, Sandford Industrial Park, Sanford, Whitchurch, SY13 2AN Website www.brockandnorris.com E-mail info@brockandnorris.com Phone 0845-521-2995

 

If you know of any other suppliers, that would be good to know.

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A torque wrench should not be used for undoing things, certainly not a barrel which has been subjected to rain and dirt and numerous heat cycles and stresses. It is very easy to exceed the maximum rated torque of a wrench when cracking a barrel off hence the use of a breaker bar.

 

My M41 Actions have the barrels 'torqued' up by hand, a quick flick of the wrist is more than adequate and even the M59/M66 actions need very little more.

By barrel change, I was referring to switch barrel locking screws, as opposed to the barrel itself. But thanks anyway.

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Thanks, Looks simple (which is good - KISS principle adhered to!) and finer tolerances that some others. Do you know of a UK supplier and if so would you provide details? A quick web search does not give any UK based hits. Thanks in advance.

 

Update: 0808 10Oct13: Eureka.

 

Country United Kingdom Company Brock&Norris Address Unit G2, Sandford Industrial Park, Sanford, Whitchurch, SY13 2AN Website www.brockandnorris.com E-mail info@brockandnorris.com Phone 0845-521-2995

 

If you know of any other suppliers, that would be good to know.

 

I got mine from Scott at Liberty Optics, he's a great guy to deal with. However much handier if someone in the UK has them in. They take a bit of practice to get the technique right but once you've got that they're a piece of cake to use. I'd quite happily buy a second one (the tool bench version) just to have on the bench.

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