arc of .223

HAMMER1DOWN · March 28, 2010, 03:52 AM

hi there, i was omn the range today and sighted in My AR's iron sights at 100 yards dead on and just out of curiosity I shot at 200 and was high by 3-4 inches, is there any way that I can bring that trajecory a little flatter.... My rifle is a Stag Arms 16" barrel with a 1:9 twist, and the bullets I shoot are 55 grain Nosler ballistic tips movin about 3000 FPS, would switching to a heavier bullet and maybe pushing them a litle faster help???

Jim243 · March 28, 2010, 11:25 AM

The heavier bullets are going to travel SLOWER but are better in the wind. It is unlikely that if you are set to 100 yards you will be shooting high at 200 yards. You need to look to something different than the bullet to solve your issue.

The first thing that comes to me is are you shooting DOWN HILL???

Jim

noyes · March 28, 2010, 11:30 AM

Scorch · March 28, 2010, 02:02 PM

If you are using the standard A1 or A2 iron sights, they are 3" above the bore line. Hitting dead on at 100 yds could well put you high at 200 yds.

Dave R · March 28, 2010, 09:52 PM

Just a thought. You may want to try zeroing at 200 yards. That may put only 1" high at 100 yards. Might be easier to deal with than 3" high at 200.

LaserSpot · March 28, 2010, 10:20 PM

I typed some numbers into a calculator: http://www.ipgeneral.com/~renegade/rifle/rifle1.shtml

Even if they were going 4500 fps, they shouldn't hit that high at 200 yards. That trajectory is as flat as a laser.

mrawesome22 · March 28, 2010, 10:39 PM

Quote:

hi there, i was omn the range today and sighted in My AR's iron sights at 100 yards dead on and just out of curiosity I shot at 200 and was high by 3-4 inches, is there any way that I can bring that trajecory a little flatter.... My rifle is a Stag Arms 16" barrel with a 1:9 twist, and the bullets I shoot are 55 grain Nosler ballistic tips movin about 3000 FPS, would switching to a heavier bullet and maybe pushing them a litle faster help???

89 words. One run-on sentence.

Tex S · March 28, 2010, 11:02 PM

Quote:

89 words. One run-on sentence.

I agree; that was kinda hard to read. Maybe it was typed on a phone???

HAMMER1DOWN · March 29, 2010, 12:31 PM

Yes sorry about the Run on there, it was typed on a phone. Actually I was at the range when I typed it. And as a side note the range is indeed downhill, but I have recently found a new range to test at and it goes to 250 yards exactly. So I will post a new report as soon as this darn wind stops blowin so hard......

March 28, 2010, 03:52 AM	#1
HAMMER1DOWN Senior Member Join Date: September 26, 2008 Location: Close Enough to Canada to say "EH!!"... MT Posts: 418	arc of .223 hi there, i was omn the range today and sighted in My AR's iron sights at 100 yards dead on and just out of curiosity I shot at 200 and was high by 3-4 inches, is there any way that I can bring that trajecory a little flatter.... My rifle is a Stag Arms 16" barrel with a 1:9 twist, and the bullets I shoot are 55 grain Nosler ballistic tips movin about 3000 FPS, would switching to a heavier bullet and maybe pushing them a litle faster help??? __________________ "Worthy is Freedom to only those who are prepared to stand behind their rifles and fight for their rights" -Robert W. Hambley....A.K.A. Myself-

March 28, 2010, 02:02 PM	#4
Scorch Senior Member Join Date: February 13, 2006 Location: Washington state Posts: 15,248	If you are using the standard A1 or A2 iron sights, they are 3" above the bore line. Hitting dead on at 100 yds could well put you high at 200 yds. __________________ Never try to educate someone who resists knowledge at all costs. But what do I know? Summit Arms Services

March 28, 2010, 09:52 PM	#5
Dave R Senior Member Join Date: January 7, 2000 Location: Idaho Posts: 6,073	Just a thought. You may want to try zeroing at 200 yards. That may put only 1" high at 100 yards. Might be easier to deal with than 3" high at 200. __________________ I am Pro-Rights (on gun issues).

March 29, 2010, 12:31 PM	#9
HAMMER1DOWN Senior Member Join Date: September 26, 2008 Location: Close Enough to Canada to say "EH!!"... MT Posts: 418	Yes sorry about the Run on there, it was typed on a phone. Actually I was at the range when I typed it. And as a side note the range is indeed downhill, but I have recently found a new range to test at and it goes to 250 yards exactly. So I will post a new report as soon as this darn wind stops blowin so hard...... __________________ "Worthy is Freedom to only those who are prepared to stand behind their rifles and fight for their rights" -Robert W. Hambley....A.K.A. Myself-

March 28, 2010, 11:25 AM	#2
Jim243 Senior Member Join Date: January 5, 2009 Location: Just off Route 66 Posts: 5,067	The heavier bullets are going to travel SLOWER but are better in the wind. It is unlikely that if you are set to 100 yards you will be shooting high at 200 yards. You need to look to something different than the bullet to solve your issue. The first thing that comes to me is are you shooting DOWN HILL??? Jim

March 28, 2010, 11:30 AM	#3
noyes Senior Member Join Date: December 27, 2008 Posts: 1,032

March 28, 2010, 10:20 PM	#6
LaserSpot Senior Member Join Date: August 24, 2009 Location: Michigan Posts: 311	I typed some numbers into a calculator: http://www.ipgeneral.com/~renegade/rifle/rifle1.shtml Even if they were going 4500 fps, they shouldn't hit that high at 200 yards. That trajectory is as flat as a laser.