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FN SCAR 17 Load help

 
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  #1  
Old 01-31-2014, 02:31 PM
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Join Date: Jun 2013
Posts: 60
FN SCAR 17 Load help

After going to the range, I took 3 5shot groups was not so happy....every 5 shots I had 2 fliers. 3 shots were about 3/4 moa. its 9Degress F out this morning with a 3mph L to R wind. I used all steps to make brass and loads ALL the same. some of the LC brass is from diff years only thing I have not checked is case weight. im wondering if its me shooting? or the imr 4064 in cold weather, or seating (2.797) or scope (vortex 1x5) dang im going nuts now and my brain wont stop turning. 44gr seems to be the correct load(powder) any help or wisdom would be awesome!!

set up:
scar 17 (308)
Lake city brass
cci primers
imr 4064(44gr)
168gr hornady hpbt

Using single stage press, rcbs AR dies with crimp.
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  #2  
Old 01-31-2014, 03:10 PM
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Join Date: Jan 2012
Location: Houston, Texas
Posts: 959
Re: FN SCAR 17 Load help

There is a lot that can cause flyers, its hard to say what it is in your case. Let me ask a few questions.

What did you find as a max load during work up?
Whats the average achievable accuracy of you and that weapon, and what ammo was used?
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  #3  
Old 02-11-2014, 10:12 PM
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Join Date: Feb 2012
Posts: 28
Re: FN SCAR 17 Load help

Infidel 811

I have a Scar 17 and have tried a few different types of bullets and powder weights, all with 4064 powder also. 168 SMKs, 175 Berger VLD Hunting and 168 Nosler ballistic tips all seemed to give .75 to 1 MOA plus flyers like you reported. I used mostly 41.2 grains as that charge shot great in a FN 308 SPR, lengths were 2.775 to 2.8".

I find the factory trigger to be real long in travel and very rough and attribute that to the flyers I seem to get also. That along with the semi auto action rocking the boat both seem to affect accuracy.

Have you had a trigger job done? Just curious if it made any improvement.
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  #4  
Old 02-11-2014, 10:25 PM
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Location: Near Napoleon,MI
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Re: FN SCAR 17 Load help

Always take a second weapon of a known performance level to the range and start out shooting that. That will tell you if you are "in the zone"... Then shoot the "new" weapon. 3 groups with a new weapon is not much. Have heard that the triggers were not good.
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  #5  
Old 02-12-2014, 10:36 AM
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Join Date: Jul 2013
Location: Maine
Posts: 58
Re: FN SCAR 17 Load help

What's the round count on the weapon? I know with any at AR I build, I wait for about a hundred rounds or so to make sure everything has settled down. The only one I didn't was a DPMS 338 fed that just shots lights out right from the start. It was awesome.
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  #6  
Old 02-12-2014, 10:55 AM
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Join Date: Feb 2012
Posts: 28
Re: FN SCAR 17 Load help

I am probably right around 150 - 200 shots fired but haven't kept track. That barrel is chrome lined and supposed to be good for 10,000 rounds so I figured just keep shooting. Good point though, even the trigger itself will probably smooth out some with more shots fired.

I think a trigger job would do wonders, love the gun but the trigger is one of my least favorite.
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  #7  
Old 02-12-2014, 11:12 AM
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Join Date: Jul 2013
Location: Maine
Posts: 58
Re: FN SCAR 17 Load help

I have a Bill Springfield trigger on my 6.8 and it is amazing. Very crisp. Always a thought. It will smooth out tho, no worries.
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