I spent most of today, at least when the sun was up, shooting the Krypton at 100 and 300 meters. It was freezing today, and the day ended with snow.
The target at 100 m was a small thermal pad. As you can see there is not much to aim at. My 100 meter zero is probably a little high, but I was looking for groupings not to hit the actual pad.
The target at 300 m is Kongsberg 300 m international. aiming at the top of the black rubber which gives some kind of visual on the thermal. No external heat.
I mounted it properly (much better than before, I was afraid of my S&B) and shot 3-4 shots, then pushed it all the way to the left, then all the way to the right.
Then I took it off, mounted it again to the best of my capability as I would think the best position would be and shot again. At 100 meter I get very little shift.
It was mounted on my JP PCS12 (AR10) with a S&B 3-27 in a Spuhr mount. There is no muzzle brake on this thing, so the recoil is there. Ammo: cheapest I can find, Sellier & Bellot 6,5 Creedmoor.
Then I shot it at 300 meters, with a hold-over. 3 shot groups with more than decent hits. Then my friend shot it. Then I shot it a few times fast with 5 shot groups. All decent hits within 8/10 points at 300 meters, I hade one last shot which was a 5 or something but just sloppy last shot shooting I think.
Then I shot it 300 meters without the Krypton, that was actually one of my worst groupings LOL, but I was probably getting tired.
Then I put the Krypton on back again and shot it at 100 meters again. Again good hits. In fact I have never shot a group this small EVER! 3 shots hole in hole, I don't expect to repeat that, but there are several witnesses. The rifle isn't not supposed to shoot that well, especially with this ammo and freezing cold.
You can see the "pattern" from the trials described above in the attached picture.
Is there a POI shift, but it's much less than expected. I think some of the height issues actually may be shooter error, and I put the reticle wrong but not sure. All in all probably about 7x7 cm for about 16 shots.
I could use up to about 20x on the scope and it was ok, sometime the reticle of the scope and the lines of the screen align strangely so that is probably more of an issue than the magnification onto the screen itself. I prefer to use 7-12x for the long range, remember the reticle is quite fine and of course the battery died on the S&B.
I don't know, what kind of other testing can I do?