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AR15.COM
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6/24/2015 11:19:38 PM EDT
Last year I bought a Sig556 ER.  It sat for a while and I have finally started taking it out.  I really like this rifle but I'm getting really frustrated with it.  I took it out last weekend to the range to zero in a new scope.  I was able to get great groups with a 6X scope at 50yrds.  When I pushed the target out to a 100 yards my groups ballooned so large I was not even hitting the target..  Any ideas on what is going on?

Thanks!
6/25/2015 12:26:08 AM EDT
[#1]
What ammo were you using?
6/25/2015 12:34:02 AM EDT
[#2]
What kind of ammo are you using? If you're using 55 gr. ammo, I'd recommend switching to heaver rounds like 62 or 75gr.

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