Rifle Scopes Optical zero is 1.1 mils off of mecanical zero?

[mustang-cars]

Just put a Vortex Razor Gen II on my Ruger Precision in 6.5CM. After zeroing it at 100 yards I noticed that it took 1.1 mils of windage(right) to optically zero to the rifle. I looked at the scope I previously had on the RPR and it took 8 MOA left of mecanical zero to site in at 100 yards. I had previously never even checked my first scope for this issue until now. It's weird that they are off in different directions.i really don't think it's the optics being as both of them were off. Is this an issue? I shoot out to 1400 yards at the matches I've been attending and I'm admittedly new to long range but not to shooting. I feel like I should be closer to mechanical zero that 1.1 mils.Any help would be appreciated.

edit: The first scope was in a Larue SPR mount and the Razor is in their PMR(seekins) rings. The base is the stock Ruger 20MOA.

 

[hk dave]

You answered your own question with "The first scope was in a Larue SPR mount and the Razor is in their PMR(seekins) rings."

 

[mustang-cars]

The first scope was twice as far off as the vortex so I'm guessing your saying it's ok to be 1.1 mils off but the first scope being twice as far off the other direction was due to the Larue mount?

 

[flyright]

My brand new NF 2.5-10x42 took 6.5 moa left windage to zero my rifle. Out of curiosity, I cranked the windage fully left and counted the total number of clicks back fully to the right (460 as I remember). I did this a couple of times and then went from fully cranked one direction to half way back (so, 230) and found that the factory zero was off by about 6 moa. So my setup was really much closer to zero than I originally thought. I've found these discrepancies in both elevation and windage on many top tier scopes - NF, S&B, etc. The factory zero is usually close but seldom perfect. Even so, I would not be worried if I was off the true optical zero by 3 mils or so. I've seen more high end custom rifles and mounts that were not perfectly aligned than those that were. Just IMHO...

 

[SubOptimal]

That the reticle may not be dead nuts (technical term) center in the tube is one thing. I personally would not concern myself with 1.5 mils. You still have plenty of adjustment and, I'm assuming, plenty of hold room on the reticle.
The mount thing is something different. I don't use LaRue mounts on any of my guns. I have one but it is now a paper weight.
On precision guns, I tend towards Spuhr mounts, on a hunting gun, I do have a set of Seekins rings and I never really tried to center the scope up. I bore sighted it, shot a couple of rounds, adjusted the turrets accordingly and went about my business. That particular scope does not have zero stops in it so I just adjusted the turret dials to zero and continued on my way.
I mostly shoot known distances on a square range and have a data card for that scope that allows me to hold over out to about 600 yards and that is mostly what i do. I always hold windage anyway.