.308 zero or 2" @ 100 yards?

[boh347]

168 gr hornady

[TxnRunner]

Here's the chart I was looking at. Compare it to the one posted above and it shows you really need to shoot your ammo out to the extended ranges you're capable of in order to get a real idea of point of impact.

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[TxnRunner]

Note ,my chart is using a sight height of 2.5 in which makes a notable difference

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[sambo73]

A 50 yard zero is a 200 yard zero... +/- 1/2"

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is that a general rule for all calibers or just the 308? what about a 223 and 7mm-08?

[bullets13]

I usually go an inch high at 100. but I'm not stressing about a quarter or half inch one way or another. If you're not going to shoot further than 200, you shouldn't have to do much figuring if you zero it in at 50, 100, or 200 and keep your shots in those ranges.

[DuramaxDude]

I am not a gun shooter, but I recently bought a .308. I went to the range and got it on paper and grouping okay. I am planning to go back and really sight it in @ 100 yards.

Is it best to have it dead on at 100 yards or 2" high at 100 yards?

I will only be hunting with this gun, pigs mostly, if not exclusively. I'm not real interested in shooting super duper long range, maybe some day, but not now anyway. I will not have doping cards or apps for bullet drop and all that stuff; just a basic hunting rifle good out to 300 yards or so.

What rifle, scope and ammo are you using?

[TxnRunner]

is that a general rule for all calibers or just the 308? what about a 223 and 7mm-08?

Every caliber is different. If I recall, while in the military we zeroed our m4's at 50 and that equated to a 200-225yard zero.

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[mikerosa]

I zero in all my big rifles in @ 1” High @ 100 yards.

I’m shooting 180 grain out of my .308

I then shoot 50 and 75 yards to see how it prints. Then because my range is only 100 yards, I use a ballistics chart for my further distance drops out to 300 yards.

I don’t shoot more than that even though friends of mine always want 400-500 yard shots. Lol [emoji23] not me.


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[howabouttheiris]

I like a 100 yard zero and learn/print a drop table.

I choose 100 vs 50 or 200, as everything will be hold overs (vs a combination of hold overs and hold unders)

I do this because I like to shoot small game at 2-300 yards and with those size targets the inch or 2 matters.


If you never want to hold over or under then enter your target size into a ballistic calculator, calculate your max point blank range and zero at that distance.

[howabouttheiris]

Max Point Blank Range Example
(with Fairly standard .308 round / fairly standard scope height)

Recommendation 2.56" high at 100 will be on 6" target from 0 to 284 yds.


INPUTS/OUTPUTS from calculator

Ballistic Coefficient: 0.48
Initial Velocity: 2800(fps)
Sight Height: 2(in)
Target Size: 6(in)

Near Zero: 32 yards
Far Zero: 243 yards
Minimum PBR: 0 yards
Maximum PBR: 284 yards
Sight-in at 100yds: 2.56" high

[Wylde E]

Every caliber is different. If I recall, while in the military we zeroed our m4's at 50 and that equated to a 200-225yard zero.

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25 meters ~27 yards for m4 zero = 300 meter zero
This is what we did in the Marines.
If you play with a ballistics table you can see what is best for you.
You can sight in at the close range then verify at the longer distance.


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[westtexducks]

My only objection to this is that your holdovers increase dramatically when you compare a 100-yard zero to a 250 yard zero. In my opinion it's better to need to hold a little low for the hundred yard headshot than it is to have to hold 6 inches high for 250 or 300 yard shot. Don't check my figures on that I'm just going off what's in my head which probably isn't that accurate.

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You may think its better but for someone that has been shooting and sighting in dead on at 100 his whole life and attempted this other great no thinking just shoot method it didnt work. And is it really that hard to aim at the top of a pigs back at 300 yards? He is closer than 300 you spine him if he is at 300 yards you hit em in the lungs. Easy to do and for most folks that have been sighting in at 100 it is so much easier to just keep doing what your doing than reinventing the wheel and then screwing up a chip shot at 100


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[westtexducks]

.308 zero or 2" @ 100 yards?

So these 2 loads are same loads first with 100 yard zero second with 250. I would rather deal with the first and just remember 14 inches out to 300 instead of having to remember your shooting 3.8 inches high at 150 which is definitely enough to cause misses over things at close ranges especially on small animals or with ear shots on pigs

.308 150 gr federal soft point from ballistic ae program defaults






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[TxnRunner]

You may think its better but for someone that has been shooting and sighting in dead on at 100 his whole life and attempted this other great no thinking just shoot method it didnt work. And is it really that hard to aim at the top of a pigs back at 300 yards? He is closer than 300 you spine him if he is at 300 yards you hit em in the lungs. Easy to do and for most folks that have been sighting in at 100 it is so much easier to just keep doing what your doing than reinventing the wheel and then screwing up a chip shot at 100


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I definitely agree that it's best to go with what is easiest for you and what you intend to do with your gun. I was just explaining what I do and why it works for me.

I guess my point was that with my setup I can shoot Center of Mass on anything larger than 6 in from 0 to 100 yards and not miss I don't have to aim for the top of the back or make any adjustment in that regard.
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[TxnRunner]

25 meters ~27 yards for m4 zero = 300 meter zero
This is what we did in the Marines.
If you play with a ballistics table you can see what is best for you.
You can sight in at the close range then verify at the longer distance.


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That's correct!

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