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post #1 of 17 (permalink) Old 11-07-2010, 03:55 PM Thread Starter
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sighting in a .243

What is the proper way to sight in a rifle? I have been told alot of ways so now I ask the EXPERTS. Any help would be great Thanks in advance.I'm shooting factory ammo 100 gr corelocs in a .243

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post #2 of 17 (permalink) Old 11-07-2010, 04:02 PM
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Re: sighting in a .243

It' depends on what you are really doing with it. I sight mine in dead on at 100 yards. There is little chance of having to shoot further than that where I hunt so there isn't any point in sighting in high. I used to do that because I read it was the right thing to do, but quikly found the flaws in that practice. No point in sighting in for an inch or two high at 100 yards when most shots will be closer to 50 or less.

Now if you were mainly hunting fields where shots can range anywhere from 50 to 500 yards I would sight differently. I was always told to sight in to where I could hold on target at the inteded ranges I planned on shooting.

If you do plan on shooting far make sure you gun can accuratly shoot that far. I won't even touch on shooting deer at long ranges with a 243. The internet police would be all over it.

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post #3 of 17 (permalink) Old 11-07-2010, 04:04 PM
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Re: sighting in a .243

try to get it at least bore sighted after mounting the scope with a laser or optical boresight. If you can't do that, start at 25 yards and see where your hitting and adjust accordingly and then proceed to go out to what ever distance your looking to sight it to. Use a good sled or sand bag rest.
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post #4 of 17 (permalink) Old 11-07-2010, 04:13 PM
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Re: sighting in a .243

All my rifles get sighted in dead on at 25 yards!
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post #5 of 17 (permalink) Old 11-07-2010, 04:17 PM
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Re: sighting in a .243

Quote:
Originally Posted by great white hunter
All my rifles get sighted in dead on at 25 yards!
What does this give you at 100yrds?

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post #6 of 17 (permalink) Old 11-07-2010, 05:00 PM
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Re: sighting in a .243

Easy way to bore sight is put the gun on bags without bolt in.Look in bore and put target in center of bore.Without moving gun,look in scope.Move scope OPPOSITE till crosshairs are on bull and bull is in center of bore.Then put it dead on at 100yds.

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post #7 of 17 (permalink) Old 11-07-2010, 05:03 PM
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Re: sighting in a .243

My father sighted in a 223 about an 1" high at 50yds and was off the paper at 100yds.

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post #8 of 17 (permalink) Old 11-07-2010, 05:37 PM
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Re: sighting in a .243

Standard calibers I like to zero for 200, making 300 yard shots easy without calculations. I start by taking the scope and turn both dials through the full range of adjustment counting the clicks, adjust them back half the counts to center the adjustment range.

Then go to the method 410er mentioned. At 25 yd with gun solid in position, bolt removed, perfectly center the bullseye in the bore. Look at how it looks through the scope, if it is off more than just a little in L-R and the scope base is adjustable, center the scope L-R using the base adjustments. After this or if there is no base adjust, adjust the crosshairs to about 1/2" high on the bull. This will put bullet impact about 1/2" low at 25 yd when aiming at center. With most scope setups and flattish standard calibers this will put you around 1.5" high at 100, real close to zero at 200, and on hair at 300.

I fine tune then for zero at preferably 200, if not then high at 100 using a ballistics table for the correct amount required for the 200 zero.

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post #9 of 17 (permalink) Old 11-07-2010, 05:52 PM
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Re: sighting in a .243

Quote:
Originally Posted by Mathews Shooter
Quote:
Originally Posted by great white hunter
All my rifles get sighted in dead on at 25 yards!
What does this give you at 100yrds?
1 inch high!
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post #10 of 17 (permalink) Old 11-07-2010, 06:25 PM
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Re: sighting in a .243

Really depends on what you're shooting. Minute differences at 25 turn into big differences past 100.

In my 243 with a 90 ballistic tip, 1.5" high scope, if I zeroed at 25 it would put me over 3 high at 100 and 4 high at 200. I'd come back to zero at 300. This is a similar trajectory that I set up for my 257wby and 300 ultra.

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