Torque settings various rifle/scope parts


PDA






30cal_Fun
March 17, 2011, 03:00 PM
Hi,

I bought a torque wrench to be able to tighten the screws on my rifle properly.
I am sure this has been covered in various topics but couldn't find every single part and there seems to be a lot of disagreement on the exact settings for different rifle and scope parts. Also I don't know if there is a difference between the settings for a Remington 700 and a Mosin Nagant.
I have a mosin nagant with a reproduction PU scope and mount.
I also have a Remington 700 SPS varmint on which I intend to mount an old Redfield scope, 4-screw rings from the same period and a Jr base, I also have a walnut stock that will be pillar bedded.
So for both the Remington 700 and the Mosin Nagant: what torque settings do I need to tighten all the screws to? Action, base, rings, windage screws?

Here are some pictures of the the rifle and scope (no pictures of the Remington yet).

If you enjoyed reading about "Torque settings various rifle/scope parts" here in TheHighRoad.org archive, you'll LOVE our community. Come join TheHighRoad.org today for the full version!
30cal_Fun
March 17, 2011, 03:01 PM
Some more pictures.

Onmilo
March 17, 2011, 05:04 PM
General rules of thumb.

Action screws 65 INCH/Pounds
Scope base screws 30 INCH/Pounds
Ring screws 15-20 INCH/Pounds

Notice these settings are INCH/Pounds
12 INCH/Pounds are equivilent to 1 FOOT/Pound of torque.

Pacsd
March 17, 2011, 10:50 PM
Is that tool a torque wrench or a torque screwdriver? Just wondering. I see the screwdriver types on shelves that run around 60 bucks. They look pretty handy.

30cal_Fun
March 18, 2011, 02:09 AM
Thanks for the settings Onmilo. I knew about the Inch pounds, but it is always good to mention. I should have put it in my post.

I have a wrench, I have been looking at the Wheeler FAT Wrench, but came across one that was prices well so I took it. It is actually intended for bicycles but can adjust from 17,6 to about 212 inch pounds of force (2-24Nm actually), so it should be more than suitable for the range I need for firearms.

Pacsd
March 18, 2011, 06:15 PM
just out of curiosity, how do yo0u get the screw heads on the screws? Extension from the wrench? Got a pic of of it?

redbullitt
March 19, 2011, 12:53 AM
Good tool for shooting. Consistency is your friend : )

One of the best things I ever did was get all those bits and pieces screwed together at the proper tension.

30cal_Fun
March 19, 2011, 02:03 PM
The wrench has a standard head on which you can click different kids of extensions.
Redbullitt, I agree, concistancy = accuracy.
I just tightened all the screws on my Mosin Nagant especially the scope mount screws. Man, what a difference with how I had tightened them by hand, some way to hard, some not enough.
Oh, and see my custom hand made rifle-maintenance-station :D $2,- worth of glue, the rest I had lying around, works better than a $100 Tipton.

Pacsd
March 19, 2011, 10:22 PM
nice set up. Thanks for going thru the trouble to post those pics.

1SOW
March 19, 2011, 11:10 PM
I talked a neighbor into using an inch-lb torque wrench: Harbor Freight-$26

30cal_Fun
March 20, 2011, 05:13 AM
No problem Pacsd. If you want more pictures just ask.
I looked at the one from Harbor Freight, seems exactly the same one except the handle.

wsm
March 24, 2011, 12:42 PM
It's good that you are using some form of torque application. One thing to remember is; when tightening the action screws, ALWAYS torque the front screw first.

45crittergitter
April 2, 2011, 10:10 PM
From Barsness, I believe:

Leupold, Talley & Echols recommend that 6-48 ring or base screws be tightened to 15-18 inch-pounds (thumb and two fingers on driver), and 8-40 screws to 28-35 inch-pounds. Most manufacturers recommend 20-something inch-pounds for ring screws. That is sufficient for a .458 Lott, and won’t mark a scope, unless the ring edges are sharp.

TCU
April 5, 2011, 06:08 PM
ONMILLO,
that is funny how you menchon the difference. When i worked on aircraft i saw the new guys once use ft lbs. Its hilarious when they would snap them and have to extract them out.

j2crows
April 5, 2011, 11:27 PM
It was not until I bought my Wheeler fat wrench that I realized how overly tight I was tightening my scope screws.

crossrhodes
April 9, 2011, 11:01 PM
What omilo said is what I generally use. I use a driver from Brownells for bases and rings. I see over torqued mounts and rings all the time and I refer to it as "farmer tight", meaning they always give it a 1/4 turn after it stops. I've seen a lot of scopes damaged from the farmer syndrome, not to mention they always strip the heads on the screws. I also apply a light coat of release agent to the inside of the rings, let it dry then mount the scope.

lindy
April 10, 2011, 01:03 AM
Torque it down till it strips, and then back it off half a turn !!

If you enjoyed reading about "Torque settings various rifle/scope parts" here in TheHighRoad.org archive, you'll LOVE our community. Come join TheHighRoad.org today for the full version!