Question for Sightron owners......

[ihmsakiwi]

I bought a new Sightron 10-50 x 60 about 6 months ago. Not the newer zero-stop model.

Booklet says it has resettable turrets. I read they need a 1.5mm Allen-key to loosen.
I can't get the allen-key to actually connect internally with a "slot". Is 1.5mm the correct allen-key in fact? I have tried all my sizes to no avail. Peter

[AllanH]

Hi

I have 2 Sightron 8-32 X 56 S111 scopes. The Allen key I use to change the turret position is either a 1.27mm or a .05 inch. The screw is a long way down in the hole.

Hope this helps.

Allan

[ihmsakiwi]

Thanks Allan. I'll go to my tool shop tomorrow. Is there such a thing as a 1.27mm off the shelf allen key?

[ihmsakiwi]

Yip, just googled it................what a weird size.

[HamonetMM]

Did a re zero on mine last week I am sure I used a multi hex bit I can post the size tomorrow if you wish.

[AllanH]

The ones I have are part of two sets (one metric one imperial) of small allen keys made by Kinchrome.

Allan

[Rich4]

It will probably be 0.0625” or 1/16 imperial, quite often in better sets, I can recommend bondhus ball end as excellent, Bunnings generally has them, cheers Rich

[ihmsakiwi]

Hi, got a response from Sightron over-night. 1.27mm Hex required which equates to 50 thou.
Bought oner today so will zero scope tonight.
Thanks for the replies.

[DannyS]

My Sightrons all came with a Allen Key of the correct size.

Cheers
Danny

[bobped]

The correct Allen key is the smallest one in the Imperial set marked "50". Sightrons are made to U.S. Specs so its all Imperial. A normal set of Allen keys doesn't usually go down to that size so you need to look around for a more complete set. Bunnings (of course) has them.
Its best to use the "ball" end and as someone said they are very deep holes so poke done a long way until you feel it engage.
Cheers