Spuhr qdp zero issues

[.22-250x]

Hello all, I purchased some sphur qdp mounts for use on the AI rifle, however having huge return to zero issues. I've seated forward to the recoil lug on the picatinny rail as per manual, torqued the screws to equal each time, taken off and put back on the same numbered rail and in the same sequence. I have taken the mount off, put back on and 3 round group is inch low, off and on again, quarter inch high and right, then back on again and perfect zero. I understand no mounts are perfectly turned to zero but this isnt in the relm of accuracy, what's peoples take on this? Thank you

 

[One on top of two]

I take mine on and off 30mm and 34mm all the time , there bang on .

I would send them back because summuts not right buddy

 

[Rural Management Services]

This usually happens with QD mounts when something isn’t perfect aligned. Randomly a shot or two lines it back up. Things like both bases need to be touching the front of the pic rail not just one. Ring tops aren’t equally tightened and therefore very slightly skewed. I have seen them before on the range where the first shot is 4” out after a change and then the second shot is bob on again. The only mounts that I have never seen this with is Innomount but then their recoil lug is almost an interference fit into the pic rail most others wobble back and forwards before tightening.

 

[Brad93]

Did you mount both mounts to the rail then mount the scope? Sounds like something is out of alignment.

 

[.22-250x]

This usually happens with QD mounts when something isn’t perfect aligned. Randomly a shot or two lines it back up. Things like both bases need to be touching the front of the pic rail not just one. Ring tops aren’t equally tightened and therefore very slightly skewed. I have seen them before on the range where the first shot is 4” out after a change and then the second shot is bob on again. The only mounts that I have never seen this with is Innomount but then their recoil lug is almost an interference fit into the pic rail most others wobble back and forwards before tightening.

I've just been playing about putting a few shots down range, you're absolutely right, 2 to 3 shots and it's bang plumb again

 

[.22-250x]

Did you mount both mounts to the rail then mount the scope? Sounds like something is out of alignment.

It's just a one piece mount, I've checked all the ring screws and all tight enough, like I've mentioned above a couple of shots seems to rectify it

 

[Rural Management Services]

I've just been playing about putting a few shots down range, you're absolutely right, 2 to 3 shots and it's bang plumb again

Something isn’t straight I am afraid and recoil fixes it. Now if your sure it isn’t your build then it could be the rings I guess but that’s going to need some proving to get a return.

 

[.22-250x]

Something isn’t straight I am afraid and recoil fixes it. Now if your sure it isn’t your build then it could be the rings I guess but that’s going to need some proving to get a return.

I can't see it being the rings it must be something I'm doing, do the two torque screws on the levers need to be torqued equally or just till the tension feels right?

 

[Rural Management Services]

I can't see it being the rings it must be something I'm doing, do the two torque screws on the levers need to be torqued equally or just till the tension feels right?

What do the instructions say? I would guess that the answer is yes as “feels right” and precision mounts isn’t usually the answer.

 

[Rural Management Services]

I know your first shot after change is an inch out but the second shot being 1/4” out is likely within what the manufacturer accepts as being within tolerance on the basis that most (90%+) shooters wouldn’t be able to do a 0.25 MOA group anyway.

 

[.22-250x]

What do the instructions say? I would guess that the answer is yes as “feels right” and precision mounts isn’t usually the answer.

I followed the instructions that stated to adjust tension until a little resistance is required to close the mount but do not tighten

 

[One on top of two]

I followed the instructions that stated to adjust tension until a little resistance is required to close the mount but do not tighten

How long have you had them ?

 

[.22-250x]

How long have you had them ?

Only a fortnight

 

[One on top of two]

Only a fortnight

Send them back because THEY ARE FAULTY .

I have them on all my CF rifles from 22-250s to PRC's and everything in between
I can take off and replace and they will be spot on , i don't mean close or really good i mean spot on zero .
If you do a search on the web there are plenty that use them and they all seem to report back with the same findings .

Send them back buddy .

 

[rocketdogbert]

Just throwing this out there, there are fakes about, that look very good.
Where did you buy them?

 

[Brad93]

Very interested to see what the resolution is because it's between these, tier1 and innomounts for me. I do like the accessories for these

 

[.22-250x]

Just throwing this out there, there are fakes about, that look very good.
Where did you buy them?

They were from optics warehouse

 

[.22-250x]

Very interested to see what the resolution is because it's between these, tier1 and innomounts for me. I do like the accessories for these

I had the innomount and they worked incredibly well, only reason I got rid was due to the fact they were too low for my scope, but again I have spuhr 30mm qdp on my .22 250 and they're flawless, just seems to either be a bad apple or user error