Need Help. Trouble sighting in a POSP 4x Fixed scope
At 25 meters, I have the elevation turret all the way on zero and it is still 36"+ low.
I have loosened the 2 screws on the turret and rotated the silver ring with the numbers on it. Still did not give me enough adjustment.
It is the AK mount version and it is mounted on my SGL-21 from Arsenal. (via Atlantic)
Is there any other adjustments I can make?
I bought it used on here (EE).
Thanks for any advice.
I think I see what you are doing wrong: Loosening the two top/side screws and rotating the silver drum with the numbers on it only to sets those numbers to zero after your sight is zero'd.
To zero it, tighten the two screws on top of each drum, zero it at 100 yards at the top chevron, then you can loosen the two screws and while holding the top of the elevation adjustment so it doesn't move, return the drums to the zero position. After that tighten the screws back down again.
On the PSOP the top of the drum (the black part) with the screws is what moves the cross-hair it does not have clicks, the silver drum with numbers is only a reference. This is also what provides audible/tactile clicks.
Rotate the top clockwise to go up, and the side clockwise to go the the right.
I can't comment on what holds you should use at 25 yards, as the sight is designed to be zero'd at 100, and I find it is most easily done at that range.
The problem is that I have the elevation set on 0 and cannot move the knob any further and I am still 2+ feet high at 25 yards. If I turn the elevation knob, the higher the number, the higher above the POI I am. But basically, at 25 yards, which I was just using to get on paper, before moving farther out, I am using a man size silhouette target mounted on a stand with the bottom of the target 18" off the ground, if I aim at the head, with the elevation on 0, I hit him in the lower intestines, so to speak.
However, with the iron sights it is hitting 6" steel plates at 100 yards all day.
I zeroed in my LPS TIP2 at 100 yards right away. Like you, my iron sights are GTG at any range. So what I did was set my rear sight to '1' for 100, and supported my PSL with a bipod and a sandbag in the back(consequently you can use two sandbags if you are not using a bipod of course). With the elevation set to '1' and the windage set to '0', unscrew the adjustment knobs. With your rifle supported, look down the iron sights until you feel like your dead center with your target at 100 yards(No rounds needed). Do not move the rifle. Now with your iron sights on target, look through the scope and adjust the elevation and windage knobs that you unscrewed earlier until your top chevron is dead center. Remember to make sure your rifle does not move during this process. Tighten back the screws and take three shots. You should be on paper at least, or you might even be close to center mass with your target.
Had to do this anyway seeing as I can't shoot at the 25 yard range with anything bigger then a .22
Well...I would try Chris's suggestion, barring that if the scope is already bottomed out and still hitting 36" low I'd try to return it.
Just to knock out any unknowns, but is the mount properly torqued to hold the scope tightly on the mount? I would say mine opens with about 15-20lb of force, for reference.
I will also second Chris's experience in that my PSOP was much easier to zero at 100 yards then it was at 25 or 50. I think its some bizzare combination of height over bore and the ballistics of the 7.62 round that make it dicey. For reference, my experience was also on a SGL21 with a PSOP scope.