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The dreaded flier

 
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  #1  
Old 12-10-2010, 05:03 PM
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Join Date: Dec 2010
Location: Elizabeth, WV
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The dreaded flier

What causes the flier? I am shooting a 338 ultra mag. 30" lilja barrel with a 12 twist. I have a pretty good load worked up. 250 match kings 90grain 7828 215 primers and .005 off the lands. Every one on here uses the moa for their groups, I always measure the widest point and subtract one bullet dia. Anyhow, for example; the other day I shot a 5 shot group that was a .193. It shoots great but it took me 6 shots to get that group because i had a flier. It dropped shot #4 1/2". What causes a flier? I am confident in my gun and confident in myself but if the round i fire at a deer at 600 yards is the one that would shoot 1/2" low at 100 yards, i'd miss the deer.
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  #2  
Old 12-10-2010, 05:14 PM
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Re: The dreaded flier

Also, i am shooting 3150-3165 fps.
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  #3  
Old 12-10-2010, 07:06 PM
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Re: The dreaded flier

1/2" at 600 is 3". You won't miss the deer.
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Old 12-10-2010, 07:51 PM
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Re: The dreaded flier

My good man. I would not consider #4 as a flier. I would describe it as the fourth shot in a very tight six shot group.
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Old 12-10-2010, 10:33 PM
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Location: So. Utah
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Re: The dreaded flier

good question. I would also like to know the answer to this question. could someone enlighten us?
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  #6  
Old 12-11-2010, 05:24 AM
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Join Date: May 2007
Location: Taranaki New Zealand
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Re: The dreaded flier

Ok, a .5" group isn't that big of a group. I have been shooting out to 1130 yards with my half inch load lately. I blogged it all on video and even though its the same old prattle from me, I recommend you watch it:
YouTube - Ballisticstudies's Channel

There will always be a number of variables that may cause fliers. I would like to suggest only one variable out of the many- please consider it carefully. You are shooting a magnum powered cartridge and as such, your shooting technique has a huge effect on group potential. Human error is the first thing that needs to be removed from the equation. Again, I talk about my own troubles with this in the above video clip. I went into great detail in this article:
Hold that Forend!

The slightest inconsistencies or mis-understood techniques will produce the results you are experiencing. I am not saying this 'is' the cause of your fliers. Its just one variable that has to be removed and something we all need to monitor, all of the time. Once that is out of the way, you can concentrate on other variables such as barrel heat/ steel stresses, pinch points in the bedding, fouling and bore condition, bullet to bore concentricity, extreme velocity spreads.

If I had to make a guess (which is all I can do without testing the rifle), based on the work I do with client rifles on a week to week basis, if a sub quarter inch rifle produces small fliers of 1 in 6, it will be you, not the rifle. Just bare in mind, its only a guess/assumption. I am pretty confident though.....

Hope that helps give you a starting point,
Nathan.
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Old 12-11-2010, 06:23 AM
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Join Date: Dec 2010
Location: Elizabeth, WV
Posts: 47
Re: The dreaded flier

Well, I appreciate your help. I do make a lot of errors but in this case i dont think its me. My gun weighs 18lbs. It has a flat bottom stock. I do not put any pressure on the stock with my cheek, just barely touch it. I have a 1.5 ounce jewel trigger. my barrel is 30" long 1.450 tapered to 1". I would wait approximately 1 minute between shots so the barrel didnt get hot which i dont think it was that since it was shot 4. Its not just a one time thing, i have fliers from time to time. Usually atleast one out of 10.
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