Caveat up front - I've never used a reticle like this before so it is new to me.
I put a 3x9x40 Nikon P Tactical scope with MK1-MOA reticle on my 7mm Magnum rifle to try shooting at a little longer distances. I know it's a low end scope but the reviews seem good and the price was right for me.
I zero'ed it at 50 yards. No problems here.
I was using my hand loads that consistently give my around 3000 fps with 150 grain Nosler partition. I used my chronograph today to be sure.
The problem comes in when I went to use the hash marks to shoot at a target 250 yards away. I used the Spot On site that Nikon provides to help you to determine bullet impact at each hash. According to the site, the first mark is 246 yards. So I went to 246 yards (checked with my Sig Range Finder) and took a shot.
The bullet was 8 inches low and this was using the first mark, which is WAY off. Using the Shooters Calculator I should only be about 5 inches low at 250 yards. Given that each mark is 2 (edit - mistakenly had 1) MOA, its seems that the Nikon site had it right as well.
BTW - this is a second focal plane scope so I had it zoomed at 9x for all shots.
Does anyone have any idea what I'm doing wrong? I'm baffled.
I only took two shots and both shots hit around 8 inches low.
Thanks for your help
I put a 3x9x40 Nikon P Tactical scope with MK1-MOA reticle on my 7mm Magnum rifle to try shooting at a little longer distances. I know it's a low end scope but the reviews seem good and the price was right for me.
I zero'ed it at 50 yards. No problems here.
I was using my hand loads that consistently give my around 3000 fps with 150 grain Nosler partition. I used my chronograph today to be sure.
The problem comes in when I went to use the hash marks to shoot at a target 250 yards away. I used the Spot On site that Nikon provides to help you to determine bullet impact at each hash. According to the site, the first mark is 246 yards. So I went to 246 yards (checked with my Sig Range Finder) and took a shot.
The bullet was 8 inches low and this was using the first mark, which is WAY off. Using the Shooters Calculator I should only be about 5 inches low at 250 yards. Given that each mark is 2 (edit - mistakenly had 1) MOA, its seems that the Nikon site had it right as well.
BTW - this is a second focal plane scope so I had it zoomed at 9x for all shots.
Does anyone have any idea what I'm doing wrong? I'm baffled.
I only took two shots and both shots hit around 8 inches low.
Thanks for your help
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