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- Nov 29, 2014
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Level is allowed.No bubble.. bench
I haven't competed since "16" but no levels are allowed so I shoot without one.
Just cant have a device to fix gun in a level shooting position.
Level is allowed.No bubble.. bench
I haven't competed since "16" but no levels are allowed so I shoot without one.
Just great. Now I have to invest in a scope level LOLLevel is allowed.
Just cant have a device to fix gun in a level shooting position.
Fantastic post, Thank youNot to beat a dead horse but to show why I made one of my prior statement here is an quote that I believe is accurate:
Note in the above example at 500 yards the drift is 1.5 inch. That would be 0.3 MOA. But out at 1000 yards it is 9 inch. That would be 0.9 MOA. That is 3 time more MOA. Therefor drift should not be expressed as a linear MOA (angle) number. The bullet arcs or curves more and more as it flies. That is why MOA is not generally part of the spin drift vocabulary. What is the MOA on a boomerang?
I can find more source, this was the first I hit with a search that sounded credible:
https://thearmsguide.com/5346/long-range-shooting-external-ballistics-spin-drift-13-theory-section/
Just great. Now I have to invest in a scope level LOL
This subject of spin drift is very in depth as is everything in long range shooting variables are endless but i will make this statement.Not to beat a dead horse but to show why I made one of my prior statement here is an quote that I believe is accurate:
Note in the above example at 500 yards the drift is 1.5 inch. That would be 0.3 MOA. But out at 1000 yards it is 9 inch. That would be 0.9 MOA. That is 3 time more MOA. Therefor drift should not be expressed as a linear MOA (angle) number. The bullet arcs or curves more and more as it flies. That is why MOA is not generally part of the spin drift vocabulary. What is the MOA on a boomerang?
I can find more source, this was the first I hit with a search that sounded credible:
https://thearmsguide.com/5346/long-range-shooting-external-ballistics-spin-drift-13-theory-section/
How practical & how effective & accurate was that little " hack "?I remember watching a program on Outdoor Channel or Sportsman's that Gunwerks or somebody like that was mounting their scopes with a small degree of crosshair cant that would account for spin drift as the elevation dial was turned.
Outstanding post. Both times.This subject of spin drift is very in depth as is everything in long range shooting variables are endless but i will make this statement.
The original post stated very specific question and I gave him a very specific answer with his data based on thousands of rounds fired with a very similar load with several rifles.
Shooting from a bench with a level and with a properly installed scope which is level to the rifle and a dead on 100
Shooting in competition at 100, 200,300,400,500 yds with no sighters or practice we shoot 5 shoots at each target for score no practice. So i found with no wind.
Dead on zero at 100
1/4 moa left at 200 appx 1/2"
1/2 moa left at 300 appx 1 1/2"
3/4 moa left at 400 appx 3"
1 moa left at 500 appx 5"
Is this data linear to 1000yds absolutely not.
But i can assure you with this info from a real world situation and this specific load and properly reading wind and atmosphere.
You can put a shot in the center region of a kill zone or target. Without spin drift data at 500 yds you are out 5" plus any other long range data acquisition errors
So i feel I gave a solid answer to original post
Definitely all goodbestill, I understand now why you properly used the MOA convention. And, I realize that was my confusion not yours around the terminology. And the 5" was a surprise, but; not the first time. In my own defense, I hope that this back and forth helped some others. It got me thinking. I hope it is all good.
I can actually see where a calculator would output MOA. That is how scopes are marked off or adjusted, by angle.
don't think Carlos had anything to do with it , but maybe Marine Sniper Platoon Hill 55 did. Mounting scope that isProbably not when shooting the 50BMG on single shot. Believe he was the first ever to attach a scope to one.
RIP White Feather.
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