.308 zero or 2" @ 100 yards?

[Rat]

Woah... Okay, this is way more complicated than I thought and, apparently, there is no correct answer.

What rifle, scope and ammo are you using?

Rifle: Savage, Model 11, Hog Hunter
Scope: Vortex, Diamondback
Ammo: 168 gr Hornady

I zero my 308 for 2.5" high at 100 with a 168gr. Berger VLD. That gives me p.o.a. = p.o.i. not greater than 3" high from 0-250. And only 3.5" or so low to 300. I like this set up for pigs because there is no adjustment needed and I'm in the vitals on a center of mass shot out to 300yards. If you like to ear hole them then you may look at fine tuning a bit more for your set uo.

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I like this approach best. I don't need to ear hole them, just put one in the boiler room without thinking about holdover, under, etc. I will say that 300 yards is definitely the longest I would take a shot.

[BrianL]

1" high at 100 works perfect for me. 90% of my shots are between 120-170 yards.

[stangfish]

There is a correct answer. Zero at 100 yards. You will be less than 2"s low at the muzzle, 3"s low at 200 and 9 inches low at 300. You will have to shoot to find out exactly what yours does but a 308 with a 165 class is right there within a half inch.

[stxhunter]

What distances have you practiced at?

[JustinJ]

I zero my 308 for 2.5" high at 100 with a 168gr. Berger VLD. That gives me p.o.a. = p.o.i. not greater than 3" high from 0-250. And only 3.5" or so low to 300. I like this set up for pigs because there is no adjustment needed and I'm in the vitals on a center of mass shot out to 300yards. If you like to ear hole them then you may look at fine tuning a bit more for your set uo.

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You should be way lower than 3.5" at 300yds with a .308. More like 6.5-7" low at 300 with a 168gr bullet at around 2700fps.

[JustinJ]

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.

I like the thought of sighting in for maximum point blank range (MPBR). You basically sight your rifle in so that at no time does the bullet travel more than 3" over the line of sight. This means your bullet will never be more than 3 inches high when shooting at something. Consider your intended target has an 8" kill zone. This gives you room for error. Then you see where your bullet falls 3" below the line of sight and you have your MPBR. Anything under that distance is point and shoot for vitals.

A quick ballistic chart shows 2.6" high at 100 will yield 3" low somewhere around 275yds. So anything within 275 yards you can shoot without adjusting the scope. 168gr bullet, .52BC, 2700fps, 2" scope height

[bboswell]

I ran this based on your Hornady 168g Amax. I backed off advertised velocity 50 fps. I this is how I would zero if were my gun and had fixed turrets.

[DapperDan]

I always sighted my 308 in dead on at 200. So out to 200 I’m right behind the should. Center mass at 250 and horizontal reticle level with back at 300. Every shot will kill a deer guaranteed.


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[TxnRunner]

You should be way lower than 3.5" at 300yds with a .308. More like 6.5-7" low at 300 with a 168gr bullet at around 2700fps.

Not with a 250 yard zero you won't. But I'm certainly no expert, I just know where my gun shoots and I've checked my point of impact out to 500.

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[JustinJ]

Not with a 250 yard zero you won't. But I'm certainly no expert, I just know where my gun shoots and I've checked my point of impact out to 500.

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With a 250yd zero, you'll shoot over 2.5" high at 100 and bullet will go over 3" above LOS.

3.3" high at 100, 3.8 at 140, and still 4.3 low at 300. Obviously those numbers can change based on velocity, BC, and scope height, but not much. It would be tough to get a .308 round with a MPBR (+/-3") of 300 yds

[Mike D]

I sight mine for a 200 yard zero.


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[TxnRunner]

With a 250yd zero, you'll shoot over 2.5" high at 100 and bullet will go over 3" above LOS.

3.3" high at 100, 3.8 at 140, and still 4.3 low at 300. Obviously those numbers can change based on velocity, BC, and scope height, but not much. I don't know of a .308 round with a MPBR (+/-3") of 300 yds

Like I said I'm no expert, I don't have fancy equipment, I don't use a Chrono, and I really have nothing to base my opinion on other than my personal experience. I pulled charts off the internet they gave me a pretty good idea of where to start to get what I wanted, and I used that information and my hand loads with 168 grain Berger vld and check my point of impact out to 500 yards and the results that I got led me to believe that I will be Killzone accurate ( not more than three and a half inch high or low) Holding Center of Mass from 0 to 300 yards. That's all the input I've got and I hope it helps the original poster. In all honesty there's a good chance that at 300 yards I'm holding a half inch high and don't even realize it (onlynusong a 3x9 scope) and that may be where I'm coming up with three and a half inch instead of 4.055 or whatever. I'm not trying to shoot golf balls I'm trying to kill animals, and the setup has done well for me; it may not work for everyone.

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[DesertDug]

200 yard zero, sited on 50 per ballistics, varrified at 200.

Minuit of Deer.

[DesertDug]

200 yard zero, sighted in at 50 per ballistics, varrified at 200.

Minuit of Deer.

Not sure what to do with 270 with cds lealpold caps, but it's set up the same way for now.

[krisw]

I sighted my 270 WSM in at 200 yards. It shoots right at 2" high at 100.