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Getting back to the OP. The thing that stood out was that you saw movement immediately after mounting, not after shooting 20 rounds of .338 LM. To me that sounds like it could possibly be a manufacturers defect in either the tolerances of the mount or tube. If so I would not try and make up for that with rosin. Can I ask what the scope is? Have you measured it and compared it to other scopes? Measured the mount? How about exchanging the mount for another and see what happens? Just throwing this out not trying to bait anyone.
My 34mm tubes are tighter than an Asian prom date in my Spuhrs.
Getting back to the OP. The thing that stood out was that you saw movement immediately after mounting, not after shooting 20 rounds of .338 LM. To me that sounds like it could possibly be a manufacturers defect in either the tolerances of the mount or tube. If so I would not try and make up for that with rosin. Can I ask what the scope is? Have you measured it and compared it to other scopes? Measured the mount? How about exchanging the mount for another and see what happens? Just throwing this out not trying to bait anyone.
My 34mm tubes are tighter than an Asian prom date in my Spuhrs.
Like others that claim they have no issues and swear by the Spuhr mount, there are those like me who have had slipping. And since the manual clearly asks to use Rosin on the tube and rings, and loctite on the screws, Spuhr must have realized slipping without these materials prior to initial distribution thus clearing them of any claim of manufacturers defect when not using these materials to mount a scope. My scope as I said previously is a S&B PMII 5-25 and since Spuhr uses this model as their premier example of presenting their mount I don't believe measuring is necessary.
Send it back.
and blame me for not using Rosin and loctite?
If you HAVE to use rosin or loctite then there is something wrong.
What if they claim there's nothing wrong with my mount.....and blame me for not using Rosin and loctite?
Or do you mean send it back to get refunded?
If it were me I'd send it back for an exchange, because I have others that I know work.
For you I think the best route is to return it for a refund. It's obvious and somewhat understandable that you will never be 100% comfortable and have confidence in one of these mounts.
Rosin is suggested on heavy recoiling rifles. You say you saw movement immediately after mounting, not after shooting. That is not right, period.
If you HAVE to use rosin or loctite then there is something wrong.
So funny how every now and then on this site some douchebag wants to show the size of his penis until a Moderator show up then everyone sees that penis turn into a tail between their legs.
The problem Mendy is people are spending alot of money for these mounts and then to have to use something to make sure it doesn't slip when much cheaper mounts and rings don't need the assistance of rosin or loctite and hold scopes just fine. Why does a product that is supposed to be the top of the line and cost 2-3 times what others cost need assistance holding a scope? Shouldn't it be machined to such perfection that it doesn't? I understand variations in tubes but again others don't have an issue with this. I think Kortik might have hit on something in that these are so beefy and rigid it is a negative in that they won't, for lack of a better term, flex to grab a scope with what might be a slightly off tolerance tube. Might be good in a perfect world but we don't live in a perfect world. That goes for Spuhr as well. Maybe these were units that were not in spec. They should probably be checked.
Wait, don't these mounts have threaded holes in the ring caps for set screws, so you can lock everything down once it is in place?
Wait, don't these mounts have threaded holes in the ring caps for set screws, so you can lock everything down once it is in place?
Pliestarcus, I'd just send it back man. At this point, what do you really have to lose? You're not going to use the mount, so might as well take a shot at getting your money back. The worst they can do is tell you no, point you to the instruction manual, make fun of you for not using it, then login to snipershide, find this thread, and chide you publicly for not using loctite and rosin!! (ha-ha) Or maybe they'll at least exchange it for a new one, and you can sell it here and recoup most of the money. Can't remember if you said this or not, but was this the first time the scope was used too? I can't imagine there would be something out of spec with a S&B, but I guess anything is possible. I know you prefer not to send things back, but you've got the best of the best in equipment you're working with there, yet you're dealing with the same things that guys like me with leupold rings on a vortex scope are subjected to on occasion. (it should be noted that I've had no issues with my leupold rings on vortex scope, and no rosin or loctite!)
Btw, that's a bad-ass rifle in your picture!
They look pretty nice. I'll have to check them out. Looks like ARC recommends a 50 in lbs torque on scope screws per the website, and finger tight on the rail clamp screws. That seems backwards, but I'm no engineer.
I still think that "Pleistarchus" needs to be checked, not only due to his way of conduct but also to his ability to mount a scope, there is something that is not right about this thread, info and bits sifting in. I have so far not seen one bit of info suggesting or proving that there is any thing wrong with the mounts, besides what has been claimed, perhaps if Pleistarchus could/would like to take some measurements and pictures.
I thought that this site was supposed to not allow that kind of thing/behavior, and further more Pleistarchus has stated that he has been in contact with Håkan about the mount, suggesting that is has become clear between the both of them that there is nothing wrong with the mounts. Even further more, there are suggestions above that there has been mounts sent out that were/are out of spec and with poor QC, but there is as far as I can read/see no grounds for claims of that sort, making them to be just pure malice and bad intent.
Perhaps it´s just one of those things, if repeated enough it will become true, well as the moderators now do seem to have an interest in ensuring that this thread continues and the negative unsubstantiated remarks as well, can ask Håkan to join in and settle things?
I do believe that I stated it clear above, no rosin is needed, no loctite either, ( several others concurred) however the manual and mounts allows for the use of both and for rifles/mounts that are to be run hard, it is even suggested. How can that be a "flaw" if it is part of the design/manual. /Chris
I've seen Spuhr's ads on this board, perhaps they were on of the dealers that is selling Spuhr's products, in any case these type of products support this board, as with other products that run ads on this board, I don't believe we should have a negative string about them. just saying.....
Rob01- You cannot be unaware of the harsh language used and the attitude shown by members here. To disregard those as you do above is below a moderator to do. Just say that it´s ok to adress other members like or something similar.
Further more, you rather fault a mount you never had in hand, then question the OP and his methods of mounting it? You have more faith in the OP and his statements, including his judgement rather than any other explanation.
I am not OK with that, I have to accept it because you are what you are in here, but it does not sit well with me. /Chris
Rob01- You cannot be unaware of the harsh language used and the attitude shown by members here. To disregard those as you do above is below a moderator to do. Just say that it´s ok to adress other members like or something similar.
Further more, you rather fault a mount you never had in hand, then question the OP and his methods of mounting it? You have more faith in the OP and his statements, including his judgement rather than any other explanation.
I am not OK with that, I have to accept it because you are what you are in here, but it does not sit well with me. /Chris
I did sat down late last night with my own set of mounts, these are the the loose mounts not the complete/solid mount, using the Borka Tool I never even came close to required and reasonable clamping force using the suggested applied tourque from the manual,
in my case this is all down to the fact that my bolts do not turn lightly, rather there is a slightly gritty feel to them. I would suggest that this is at least an opening/ venue of a suggesting where things parted, ie intended and required tourque were not meet. Given time and desire to do so I might go back and use a little moly lube or similar and redo the test to see if it has any relevance.
Just this past weekend I lent the mounts and scope a Henny 4-16 to a friend, his scope took a dive, his picatinny rail was/is not bedded and not straight, visibly curved using a straight edge to measure, something we found out after we had mounted up the Henny and tightened the bolts on the mounts,
the scope and the rings are such a stiff/solid unit that it bent the rail back and stressed the action enough to make closing the bolt hard, needles to say, we took it back of again and my friend shot my rifle for the remaining sunday.
/Chris
Rob01- I accept your moderation of the thread, I still have serious issues with the fact that you just disregarded ( actually totally ignored) my comments about the foul language and just kept on guessing what could be wrong with the mounts and rehashing there cost and how you will never own a pair, still you have a lot of first hand experience with them.
/Chris
As to give others the benefit of the doubt, you are most right about that, however that goes all the way around, ie until someone has been able to actually measure and show that the rings/mounts are out of spec, right, right? I can not say that I came in hot, however I did put more than a few on the spot, and called them on there less than complete knowledge/ignorance of the content of the manual, that is for some men hard to handle, hence the foul language.
Still I did sat down late last night with my own set of mounts, these are the the loose mounts not the complete/solid mount, using the Borka Tool I never even came close to required and reasonable clamping force using the suggested applied tourque from the manual,
in my case this is all down to the fact that my bolts do not turn lightly, rather there is a slightly gritty feel to them. I would suggest that this is at least an opening/ venue of a suggesting where things parted, ie intended and required tourque were not meet. Given time and desire to do so I might go back and use a little moly lube or similar and redo the test to see if it has any relevance.
Just this past weekend I lent the mounts and scope a Henny 4-16 to a friend, his scope took a dive, his picatinny rail was/is not bedded and not straight, visibly curved using a straight edge to measure, something we found out after we had mounted up the Henny and tightened the bolts on the mounts,
the scope and the rings are such a stiff/solid unit that it bent the rail back and stressed the action enough to make closing the bolt hard, needles to say, we took it back of again and my friend shot my rifle for the remaining sunday. Why I am adding this, well I did find it interesting and in part it has some bearing to the threads topic.
/Chris
So with that logic we can't give any negative feedback about pretty much any product we use as many sponsor the board and also are sold by many sponsors. So sorry but I don't agree at all. There has been negative threads about pretty much every product you can think of and also forum sponsors. Why is Spuhr some sort of sacred cow that no one can question or speak ill of?
I'm sorry that anyone is having a problem with Spuhr Mounts. I am not going to get into the mess this thread has became except to say Mile High Shooting has always had a policy of taking care of our customers period. No If Ands or Butts. If you are having issues
with a Spuhr Mount just call us for a RMA and we will issue a refund or send you a new one. I will tell you that Hakan Spuhr feels
the same way. Just return the mount and I will send it to Hakan for evaluation. I think lapping is not needed with the quality of the
machining. We haven't had a scope slip that we have mounted but that doesn't mean it can't happen.We haven't used Rosen ourselves but I know that it works.I will contact Hakan about this and I'm sure he will comment. But again just contact us and we
will refund or exchange your mount.
Thanks
Hi
Sorry I have not been looged on to SH for a number of months.
Nope the Spuhr mount does not need lapping.
I am very sorry for any inconveniences and I know you have returned the mount so we will soon examine it.
I know you know have contact with Mile high and I am positive you will get satisfied with their service.
Mile High is great to deal with and only a phonecall away!
Since my gunsmithing days I have always used rosin on all mountings regardless of make as long as it not was for any small caliber gun.
The Rosin have two really great advantages, the first is that the friction is really big and it secures the scope. The second reason is actually to protect the scope.
I have seen ringmarks from mostly ring manufactureres on scopes and the thin layer of rosin does protect the surface.
Metal to metal can produce ringmarks and that is so boring.....
When it comes to the torquing of the caps I belive that you should torque each screw more than once, very similar to what you do on a carwheel.
First criss-cross pattern and then torque each screw more than once.
For those here who wonders what the spuhr mount really is, it's well described here.
http://www.spuhr.com/scopemount features.pdf
I will contact you personally when having examined the mount.
Håkan