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Posted: 2/23/2011 11:23:28 AM EDT
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I shot my 556 at 100 yards today and the results were average at best. I sighted it in with about 5 shots (previously sighted in at 25 yards first) and then decided to try for groups. I was getting around 2 inches or so for 5 shots with both 69 grain (SS-109) and 75 grain Wolf gold. I have other ammo I will bring for my next trip but my main question is how long to allow the barrel to cool between groups? I didn't allow but maybe 30 seconds if that between groups and a friend suggested that with the thin barrel that could be a problem. It did shoot 3 shots into .75 inch from a warm barrel but the next two shoots opened up that group to almost 2 inches so it shows some promise.
I normally shoot a bull barrel AR-15 in .223 and several bull barrel bolt actions so I am not real familiar with waiting a long time between groups. What have you guys found is a good break to allow it to cool? Thanks for any responses. I switched to a 4-16x scope for ammo testing but the regular scope is a 1-4x. |
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Check this link out: The 550 Sniper the author was using he pulled around 2 inch groups with the "heavy barreled" SIG 550 sniper. I think I'd be pretty happy with 2 inches @ 100 out of my SIG556, but that's just me.
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I am hoping to better these results with some other ammo. I have a bunch of different high quality ammo to try and I imagine one of them will give me a 1.5" group or better. At least I am hoping so. I guess I got spoiled from my target AR-15 but it is a different animal entirely. I checked the targets and I had many 3 shot groups that were 1.4 inches but I guess that is why we test 5 shots and not 3 as the last 2 seemed to open up the group some more.
As for that sweet Sig rifle I saw a picture of one in the Wall Street Journal. There was a photo of a swiss police officer that was on a roof guarding the Davos conference. I was wondering what the rifle was and I appreciate the link. What an absolutely gorgeous rifle. I am surprised that it doesn't shoot better than it does but it is the most awesome looking rifle I have ever seen. |
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