SM and UM Tikka rings

[dirtytough]

I threw a UM ring on a rail that had an SM ring already mounted to compare the height. I noticed the UM ring was offset from the SM ring. After a little testing it looks like the UM rings are machined off center.

I’m surprised it’s the UM ring and not the SM.

 

[FacePlant]

Yikes!

Design feature? Offset the scope far enough to the left and ejecting brass will clear SWFA windage knobs with ease!

Were these purchased recently? Any contact / response from UM on this? I need something taller than my TO84 rings and was considering their mediums but...

 

[dirtytough]

After talking to someone that talks to the actual manufacturer directly it sounds like something was off between what they thought the rail spec was and what it is. I did not hear that they actually corrected anything when they found out. Maybe they will in a future Gen?

These are used. I got them off here to test something.

I doubt the offset is enough to matter much. Might help with having to compensate for spindrift way out there? I didn’t think of helping to miss windage knobs but maybe that’s it? lol

Just surprised the SM which I view as a cheap but usable set of rings are a more proper fit than UM which I view as a premium ring.

I have a set of the SM HTO73 which are taller than the TO84 and haven’t had any issues so far.

 

[LongWayAround]

@Unknown Munitions

Is this a known issue? Limited number of rings affected?

I have one set of your rings and have planned to purchase more.

 

[Salmon River Solutions]

The offset is extremely minimal. The advertised tikka rail dimensions do not actually match what they manufacture, so the solid ring side was offset a very small amount to accommodate this. The rings are in line with each other, you just have to run the rings in a matching orientation (both clamps have to be on the same side)

Thaaaaaaanks Branden lol

Ken

 

[SDHNTR]

That explains why the set of UM rings I recently installed took up a lot more scope windage than I’m used to. Didn’t bother me much as I don’t dial for wind but it did make me scratch my head.

 

[Justin Crossley]

That explains why the set of UM rings I recently installed took up a lot more scope windage than I’m used to. Didn’t bother me much as I don’t dial for wind but it did make me scratch my head.

The rings being off center by .002" would not require a noticeable amount of windage correction. A large windage correction means something is angled in the system.

 

[BLJ]

The offset is extremely minimal. The advertised tikka rail dimensions do not actually match what they manufacture, so the solid ring side was offset a very small amount to accommodate this. The rings are in line with each other, you just have to run the rings in a matching orientation (both clamps have to be on the same side)

Thaaaaaaanks Branden lol

Ken

But not the Sportsmatch rings on the same rail?