https://www.youtube.com/watch?v=BM3SHvYosSs
I have 4 rifles I class as genuine moa rifles, my standard isnt as tough I am happy with 5 shot groups provided they do it consistently. 2 of them dont make the weight limit. My sako quad switch barrel in 17HM2, 17 HMR, 22LR & 22WMR does, with ammo it likes I class it as a MOA rifle in all 4 chamberings.
It is my rabbit rifle, in 15 years it has never worn anything other than a 3-9x scope and hunting thickness duplex reticle even though I have used it at the range a bit shooting 200m rimfire matches and benchrest a few times.
Over the weekend I looked through the safe and pulled a 4-20x scope with 0.25moa dot reticle off another rifle and fitted it to the sako. I needed to go hunting for a bit of dog food monday and as it had the 22WMR barrel fitted dig though my ammo locker to see what I had on hand. Found 5 packets of old winchester super X silver box ammo that I need to use up so decided to sight it in with it.
First thing that became obvious was how much movement the extra magnification was showing up compared to the 3-9x even from a solid rest. Shooting off a bench using a bipod and the stock supported by my off hand I could see my heart beat moving the rifle about 1/8moa.
Got the rifle sighted in dead on at 50y and proceeded to shot a 5 shot group. About what I expected from the ammo 4 shots into 1/2" with a flyer opening it up to 3/4" decided I might as well shoot 10 and see what happened again 4 of the shots went into the same group and another flyer made the group just over 1" so 2moa at 50y.
About what I expected from the original 40gr WMR loadings, I did have a box of 30gr V-max ammo with me. it has always shot around moa for 5 shots and I was interested to see what the difference in point of impact was between the 2 loads so shot 5 with it and was rewarded with a ragged one hole, thought I might as well put another 5 down range and see just what it would do under the rules for this moa challenge. End result was my one hole group increased in size a little but as near as I can measure it 0.41" so 0,8moa at 50y.
As I said previously with the 3-9x scope the V-max ammo has shot around moa for 5 shots it certainly looks like a bit more magnification and more precise aiming of the 0.25moa target dot has improved group size. Some time in the next month I will actually shoot the challenge in accordance with the rules videoing the attempts and using software to measure groups. Intend to do it with all 4 chamberings, the HMR barrel has previously shot multiple groups around 3/4moa one after the other with ammo it likes, the 22lr has no trouble averaging under moa for multiple groups and with quality ammo like Lapua X-Act gets into the 0.8's. 17HM2 will be the hardest to achieve very limited ammo choice so it will depend on if the batches I have on hand agree with the rifle.
Interestingly over the weekend a hunting forum I am a member of held their annual range shoot, with all the recent discussion over moa factory rifles they decided to do their own MOA challenge, 5 shots from a factory sporter at 200m, 5 shooter achieved moa with the best of them shooting 0.62moa with a factory 308 hunting rifle.
