I bought a Nikko Stirling 10-50x60 Targetmaster scope to use for load testing while my Sightron SIII was getting the reticle changed. I would say the Nikko is pretty darn good considering it cost only four hundred bucks. It has a reticle marked in half-mils and the turrets are marked 1/8" at 100 yards; i.e. eighth-MOA. Testing at 100 yards was satisfactory, but thinking back, I realize that I had a little trouble finding zero, which is not normally the case.
Because my Sightron took longer than promised, I was forced to use the Nikko for a 600 yard F/TR match. I applied the appropriate dope for windage and elevation, but it took forever to get on target and then longer than usual to find zero. Eventually I got squared away and my second and third strings were good.
The following week I was testing some new powder at 100 yards so I reversed the elevation dope. Once again, I was surprised to see that the first round was nowhere close. It finally dawned on me that the Nikko turrets were NOT one-click-equals-1/8"-at-100 yards. Mystery solved, at least partially.
I started experimenting. It took 69 clicks to change the POA by 12 inches at 100 yards using a target with a 1" grid. At first that didn't make any sense, but after returning home and doing a little work with my calculator it turns out to be darn close to the 66.6 clicks required if the turrets are actually 20 clicks per mil. rather than the marked values.
Does anyone with a Nikko Stirling 10-50x60 Targetmaster find that their scope reacts this way? An attempt to get an answer from Nikko Stirling has resulted in silence so far.
Because my Sightron took longer than promised, I was forced to use the Nikko for a 600 yard F/TR match. I applied the appropriate dope for windage and elevation, but it took forever to get on target and then longer than usual to find zero. Eventually I got squared away and my second and third strings were good.
The following week I was testing some new powder at 100 yards so I reversed the elevation dope. Once again, I was surprised to see that the first round was nowhere close. It finally dawned on me that the Nikko turrets were NOT one-click-equals-1/8"-at-100 yards. Mystery solved, at least partially.
I started experimenting. It took 69 clicks to change the POA by 12 inches at 100 yards using a target with a 1" grid. At first that didn't make any sense, but after returning home and doing a little work with my calculator it turns out to be darn close to the 66.6 clicks required if the turrets are actually 20 clicks per mil. rather than the marked values.
Does anyone with a Nikko Stirling 10-50x60 Targetmaster find that their scope reacts this way? An attempt to get an answer from Nikko Stirling has resulted in silence so far.
