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.308 WIN Spindrift?

 
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  #1  
Old 09-02-2008, 09:58 PM
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.308 WIN Spindrift?

Anyone have any data on spindrift using a 168 gr out of the .308 at distances 500+ yards?
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Old 09-02-2008, 11:01 PM
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Re: .308 WIN Spindrift?

Quote:
Originally Posted by NONYA View Post
Anyone have any data on spindrift using a 168 gr out of the .308 at distances 500+ yards?
I'm fairly sure it's negligible at any distance within the capability of a 308.

All other variables fairly significantly over ride spin drift.
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Old 09-03-2008, 08:02 AM
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Re: .308 WIN Spindrift?

So what you dont think that it exists in a .308 win?
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Old 09-03-2008, 09:15 AM
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Re: .308 WIN Spindrift?

NONYA,
Here is a thread where they talked about it to great lenghts. It also has a webpage to caculate it.

Hope this helps.
Spindrift Calculation?? - Sniper's Hide Forums
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Old 09-03-2008, 09:24 AM
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Re: .308 WIN Spindrift?

Nonya,

Yep, it exists in a 308 and all other projectiles out of a rifled bore.

I just don't think it matters "that much" or I'm just not advanced enough in my shooting.

If I could ever master the "wind" thing then I'd probably think about spin drift a bit more.

Another thought, right or wrong, if one "sights in" on a far distant target and regularly hits it under no wind conditions, wouldn't spin drift automatically factored, though unknowingly, in to the process.? Just a tho't.
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Old 09-03-2008, 12:17 PM
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Re: .308 WIN Spindrift?

Roy hit the nail on the head with his comment. Worry about the wind and your rest....
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Old 09-03-2008, 05:21 PM
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Re: .308 WIN Spindrift?

You guys are going to laugh at me for this but this is how I beat spin drift.

I first set my scope dead level to the rifle or as level as I can get it. I then take the load I will be using the most and dial it in perfectly at 300 yards. with the use of an external scope mounted bubble level. I then (this is the tricky part) find a day and location when and where there is NO wind whatso ever. I ussually reserve this for the coldest of days and early in the morning when there is typically no air movment where I like to shoot. Then I set up at the maximum distance I like to shoot. For me it is 1000 yards. I then (paying extra special attention top that bubble level) begin to shoot at the 1K line. Most of my loads from my 308 have been 8-10" to the right of center. Then I loosen the left side of my scope ring screw a tad and tighten the right side a bit. With a bit of patience you can ussually get the scope a rotate a tiny ity bitty bit off of true plumb. By leaving the bubble level alone and shooting by that the rifle is essentially canted every time you pull the trigger. Whether you use hold overs of dial the knob it brings it back in line. Complicated? Yes. Peace of mind? You betcha!
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