Rifle Scopes S&B 5-20 Ultra Short Elevation Turret Confusion

[Commander Shepard]

Just received a S&B 5-20 Ultra Short with a double turn CCW MTC turret. The manual it came with (as well as every pdf version and every thread I could find) talks about there being two 2mm Allen screws on the elevation turret which are used for zeroing, and a slotted screw which is not to be used for anything. Well, mine has three 2mm Allen screws and one slotted screw. The manual specifically states to only loosen two Allen screws, well which two?They look identical, I can't tell them apart at all, and are 90 degrees offset from each other (so 0, 90, 180, and the slotted screw is at 270 degrees as you're looking down at the turret from above). Any ideas?

 

[steve123]

Is one or two of the screw holes plugged??? If plugged with the rubber plug that/those should be left alone I think.

 

[ZiaHunter]

Have two S&B PM II's with the MTC turrets and both of them only have 2 allen screws and one slotted. With the elevation set to zero, the allen screws are in the 90 and 180 degree position and are the ones you loosen. Generally the slotted ones are sealed with either silicone or a rubber plug. Not a good idea to remove the turret since it is a real PITA to get it back on again due to the zero stop and DT mechanism. Don't ask me how I know.

 

[Commander Shepard]

None of the holes are plugged. If one of these Allen screws isn't meant to be touched, I want to know whose brilliant idea it was to make all three the same.

Picture of slotted screw added to show that there are four.

 

[dbransco]

I’m pretty sure mine only has the 2 Allen screws and the one slotted screw? I’m looking a photos to determine this, but will be home this evening and will confirm. The slotted screw is supposedly the one that secured the turret, so you should be ok loosening the allen head screws.

 

[Plange]

I thought I had answered this for you today? Is there still a problem? If so please call me back and I will attempt to resolve it for you. Thanks, Paul

 

[Commander Shepard]

This was posted before we spoke Paul.

 

[Plange]

This was posted before we spoke Paul.

Ok. Just wanted to make sure all was good. Have a great weekend.

 

[pell1203]

So what was the answer/solution?

 

[Plange]

So what was the answer/solution?

There was a plastic plug that was missing from one of the allen cap screws. I let him know which of the 2 screws were the ones that he needed to loosen to set zero. (Which happen to be the screw at zero and 90 degrees to the right of zero).