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Max Online: 16728 @ 03/25/12 08:51 AM
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#6092331 - 12/19/15 02:45 PM Vertical Stringing Question
Furb Offline
Pro Tracker

Registered: 09/06/05
Posts: 1798
Loc: Arlington, TX
So my 6.8 is vertical stringing, not bad, still under 1" top to bottom on the 5 shot group. ES is about 80 FPS also. Question is would you worry about tweaking the load to eliminate the stringing or just let it be, gun as a 20" AR15. Target is the one on the right.



Side note, the new lot of Varget I got seemed to tighten up the 308 grouping plus added about 30FPS with no pressure signs. Previous best group was around .479". 4 shot group because I only 5 rounds and not 6 so the one off to the side is the fouler/Cold Bore round.
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#6092350 - 12/19/15 03:14 PM Re: Vertical Stringing Question [Re: Furb]
RiverRider Online   content
THF Trophy Hunter

Registered: 11/11/07
Posts: 7109
Loc: Wise Co.
I'd shoot it at 200 yards or further if I had the place to do it. You might be surprised, or you might be aghast. The truth is you're not going to miss your target at 100 yards with a load shooting like that. If you shoot at 200 or further, though, it might be a different story.

There's some tricky stuff about how barrel harmonics treat trajectories with barrel time variations (as in velocity spread). It is possible to have virtually NO vertical spread at one distance while having several inches of vertical spread at another distance, with the very same load.
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#6092397 - 12/19/15 04:00 PM Re: Vertical Stringing Question [Re: Furb]
Big Fitz Online   content
Veteran Tracker

Registered: 12/06/09
Posts: 2190
Loc: McKinney, TX
You might check out the below topic where Chad mentioned some very interesting stringing issues he has experienced with ARs.

AR Shot Stringing by Chad
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#6092423 - 12/19/15 04:24 PM Re: Vertical Stringing Question [Re: Furb]
FiremanJG Online   content
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Registered: 12/16/08
Posts: 21136
Loc: Wolfe City, TX
ES of 80, and a vertical string like that, I'd rework the load. And as River Rider suggested, I'd do it farther than 100 yards. Chad likes to use 200, I like 300+, to each his own.
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#6092556 - 12/19/15 06:09 PM Re: Vertical Stringing Question [Re: FiremanJG]
Tactical Cowboy Offline
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Registered: 08/23/11
Posts: 3200
Loc: San Angelo
Originally Posted By: FiremanJG
ES of 80, and a vertical string like that, I'd rework the load. And as River Rider suggested, I'd do it farther than 100 yards. Chad likes to use 200, I like 300+, to each his own.


Agree 100%
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