Rifle Scopes Spuhr torque question

[TikkaSteve]

hey guys, I'm new to shooting rifles. I bought a spuhr mount and a new vortex razor. My question is what torque values are you guys using with the spuhr mounts since they have 6 screws each top cap? I dont want to go too high and mess with anything going on inside of the tube...Thanks! Steve

 

[Krob95]

Look at the sheet that comes with the mount and reference that against the razors instructions for mounting and torque values. I run Spuhrs recommended torque on my S&B’s with no issues. High end for the mount is 25in/lbs. so I wouldn’t exceed that.

 

[Krob95]

And 45in/lbs for the screws that clamp the mount to the pic rail on your receiver

 

[Threadcutter308]

In addition to what Krob said, there has been talk recently about Spuhrs causing binding in parallax adjustment(s). I have multiple Spuhrs on top end scopes and have never had that problem. I'm suspicious of the claim, but others say they have had issues, so, they must be having them.
I'd suggest maybe starting at 20 inch pounds for the screw caps and make sure you aren't having parallax adjustment problems. If the scope doesn't slip/move, leave them at 20. If the scope moves, increase to 25 inch pounds. I agree again with Krob, don't go above 25 inch pounds.
45 inch pounds on the rail clamps screws is fine.

 

[TikkaSteve]

In addition to what Krob said, there has been talk recently about Spuhrs causing binding in parallax adjustment(s). I have multiple Spuhrs on top end scopes and have never had that problem. I'm suspicious of the claim, but others say they have had issues, so, they must be having them.
I'd suggest maybe starting at 20 inch pounds for the screw caps and make sure you aren't having parallax adjustment problems. If the scope doesn't slip/move, leave them at 20. If the scope moves, increase to 25 inch pounds. I agree again with Krob, don't go above 25 inch pounds.
45 inch pounds on the rail clamps screws is fine.

This is why I'm asking, spuhr doesn't give a torque for the caps they want you to refer to the manufacturers specs, i can obviously just do that, however there are two more screws per cap and torquing 6 screws per cap compared to 4 absolutely increases the clamping / crushing force and i have read posts stating that exact thing about the parallax. I just dont want to damage this thing I've been waiting far too long to get it and I know you guy have alot more experience at this than I do... thanks!

 

[clubsportmark]

Spuhr recommends 20-25 inch lbs. However I’m sure vortex recommend 17 inch lbs if you don’t want to see issues.

 

[Krob95]

Here’s the torque pattern. It’s weird you didn’t get a piece of paper that sits on top of the foam when you open the box. Has all the info minus the torque order.

But here’s the torque specs and the order in which to torque the screws on the cap. The pic rail screws are numbered, start at 1 and go on through 4.

 

[Gee Kay]

each scope manufacturer states a different torque value, see your scopes instructions for torque values. if not mentioned in the manual, contact the scope manufacturer for their input on what the correct torque values should be or you run the risk of crushing the tube and the scope not working as intended.

 

[kimbergoldmatch]

I have a Spuhr ST-3701 and a Vortex AMG

Spuhr ST-3701 Base Screws - Spuhr recommends 45 in-lb So that’s what I torqued to
Ring Screws - Spuhr recommends 15-25 in-lb but Vortex recommends no more than 18 in-lb which is what I torqued to

 

[oniak]

I do 18 in-lbs with rosin on my Kahles. Never had a scope move on me. Just shot over 500 rounds of 6.5 in a 4 day precision rifle course.

 

[TikkaSteve]

I have a Spuhr ST-3701 and a Vortex AMG

Spuhr ST-3701 Base Screws - Spuhr recommends 45 in-lb So that’s what I torqued to
Ring Screws - Spuhr recommends 15-25 in-lb but Vortex recommends no more than 18 in-lb which is what I torqued to

And obviously you had no issues right, I think our scopes are pretty much the same so ill try it, I wanted some feedback before I torqued it up. Thanks alot!

 

[kimbergoldmatch]

And obviously you had no issues right, I think our scopes are pretty much the same so ill try it, I wanted some feedback before I torqued it up. Thanks alot!

None whatsoever, I have had two different AMG scopes (different reticles) in that mount using those torque figures with no issues. Note that I did not/do not use Loctite on any of those screws.