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Why are my shots going to the right?

 
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  #1  
Old 09-08-2012, 09:45 PM
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Why are my shots going to the right?

This first photo is at 200yds so you can see that the scope is sighted in correctly.

the next 2 photos are at 425 and 600 respectivly and were taken while trying to do some trajectory validation (hence high) however there was absolutely no wind at either my location or that of the target.



The center of the 425yd group is 3" right and the 600yd group shows 7" right. I have noticed this for some time so it's nothing that started over night. Any ideas on the cause of this? My first thought was spin drift but this is to much as the 25-06's trajectory shows appx 3151fps.
Speaking of spin drift how do I figure weather my rifeling is right or left as it asks this question on theG7 ballistics program.

I'm looking forward to yals ideas on this as it has me baffeled and I don't know how to correct it. Thank's, Brad
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  #2  
Old 09-08-2012, 09:52 PM
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Re: Why are my shots going to the right?

I would guess your scopes not level. Shoot it at 100 yards then turn your dial up 30 MOA and aim at the same place. Then use a plumb bob to make sure its level.
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Old 09-08-2012, 10:12 PM
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Re: Why are my shots going to the right?

most modern firearms sold in the us are right hand twist

but you can run a tight patch through the bore from the breach end and feel direction of the rifling twist
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Old 09-08-2012, 10:15 PM
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Re: Why are my shots going to the right?

They are almost all right twist but spin drift won't be that extreme at 425 yards. Scope pry needs leveled. Read about it on Darrel Hollands web sight.
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Old 09-08-2012, 10:43 PM
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Re: Why are my shots going to the right?

What learning said in his first post....
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Old 09-08-2012, 10:43 PM
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Re: Why are my shots going to the right?

Learning, I guess I don't understand. Are you saying that if I look at the bullseye at a 100 yd target with the turret at 30moa the vertical will look lopsided? Brad
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Old 09-08-2012, 10:49 PM
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Re: Why are my shots going to the right?

read this. Reticle Perpendicularity by Darrell Holland
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