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308 zero

1.3K views 23 replies 6 participants last post by  ClevisR6  
#1 ·
now that the rock river is gone i'm going to pick up a 308 bolt action.

what do you guys zero at? Do you zero for 100m and use a ballistics calculator to calculate your dope?
 
#4 ·
Many variables

Depends on if you know what your greatest distance will be and what type of reticle you are using, what caliber your using and what the limits are on your scope.

Anything under 500 yards and a 100 yard zero will work, 501 -900 and a 200 yard zero will do the trick, 901+ and 300 seems to be a good choice. Again, all depends on teh things above.

As long as you know your trajectory a reticle with a GOOD BDC will be worth it's weight in gold. GOOD reticle meaning Mil Dot, P4F, NPR2. A crosshair and duplex will have you working your turrets way to much if you are engaging moving targets at varying distances.
 
#5 ·
Any suggestions on a scope that is the best bang for the buck?

I was thinking of starting off with something simple to get practice working the turrets and getting the basics down before I drop $3k on some Hattori Hanzo glass
 
#6 ·
My advice would be a mildot reticle as it is universaly accepted. The only problem with that is that in a budget minded scope you will end up with a Mildot reticle which is metric system based and your windage and elevation adjustment will be in MOA which is english based. This isnt that big a deal and if you learn MIL/MOA from the beginning your fine.

The Super Sniper line is a good starting point, or if you have extra $ Leupold MK IV.

Otherwise Bushnell and might be worth a try in the sub $300 range.

The super sniper though is hard to beat as it has tons of windage and elevation travel.
 
#8 ·
Thanks Ponch. I'll check those out. Metric vs english... it's everywhere from bike to cars/trucks to guns/ammo. My Ford Ranger had metric nuts/bolts and the US Military uses meters instead of yards for zeroing/ranges...???
 
#10 · (Edited)
The most important question is out to what distance are you planning on shooting regularly? Then make a cheat sheet for other distances.....

I like to zero for 50 yards with my 308, as you are +/- 3" out to 200 yards. I don't take many 200+ yard shots deer hunting (in NE mind you). This allows me to never change my scope from zero and still be right on.

Now you gonna go do antelope or something where a 400yd shot isn't unheard of out in Wyoming... well you just either adjust (clicking the knobs), or calculate and change your zero ahead of time.

also something to think about with the mil dots, most ballistic calc will give you drop in inches (what i list below) and drop in MIL, which make for easy adjust on the fly. a drop of 2 MIL, means put the second dot down on the reticle on the target and you are on target..... Just a thought.

50 yard zero with Sierra 165gr, Gameking.... (my centerline scope height is 1.5")

0 -1.5
25 -0.6
50 0.0
75 0.3
100 0.3
125 -0.1
150 -0.7
175 -1.8
200 -3.2
225 -5.0
250 -7.2

Same set up but a 100 yard zero... I don't see the benefit of the 100 yard zero ( now i do zero at 50, then shoot at 100 or 200 to check it...LOL).

0 -1.5
25 -0.7
50 -0.1
75 0.1
100 -0.0
125 -0.4
150 -1.2
175 -2.3
200 -3.8
225 -5.6

EDIT: I've also seen people suggest a 36yard zero or some weird thing (as a "battle zero), and when you run the numbers it seems optimal but find a range with 36yards marked off.... you can do it yourself, but most ranges don't allow that or have mobile target.

Most importantly is get it zeroed, and then know how to adjust for other distances by MIL or by clicking your scope knobs, and learn to estimate distances. Once you are zeroed you can get to whatever distance you want by math, hold over or clickys.
 
#12 ·
100 2.17
200 8.97
300 21.68
400 42.03
500 72.39
600 115.98
700 177.12
800 261.11
900 373.47
1000 519.23


Theres teh bullet drop for a 7mm bullet with a BC of .283 at a speed of 3110.

Based on the above info, the knowledge you gained in previous posts and the knowledge of your equipment you tell us what you zeroed at
 
#19 ·
well the AR is consistent. It was low and we were making good progress until the scope got bumped off then ran out of daylight. The 7mm hit the gigantic red tree I was aiming at in all 6 shots just not the target I was aiming at. We started at around 150 yards. Target size was a 8.5x11 piece of paper with one or four targets printed on it. The ar was shooting at 4 small targets at 150 and consistent just not on the right target and was working towards fixing that.

The 7mm ... well by time I had missy set up and the 30-06 sighted in for her I got 50 .223 rounds in and was having a blast :D Got a few shots with the 7mm which felt EXCELLENT. RAW POWER and I'm sure that long dead tree was barely containing the rockets in it's 3' of girth but wow :D

Tomorrow, I'll set up at 25 yds and put 3 in to benchmark it.

The AR, this is exactly why I ordered a rear flip up sight for it. if something happens to the scope I want an iron sight fail over. soon that, a foregrip, a light will be here to make life better. also got a $8 boresight for the .223 since that will have the most optics changes. Need to pull that goofy rubber thing off the mag before we shot again so it doesn't tip over off the bipod into a soft case and fall off.
 

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#20 · (Edited)
Also the Nikon M-223 destructions note that it is advisable to use the Nikon M223 mount with this scope as it has 20moa already built into it aiding in allowing the rifle and scope to shot farther, also would esplain why I was adding inches to get it up from zero closer to the bullseye..

Ponch, does that mean I need to sell my Armalite EX0027 scope mount or trade it for a M223? Online the Armalite one costs more. Anyone want to trade?

oh and missy also resonates how FUN the AR is to shoot! Thank you Tony!

she had the 30-06 jump and hammer her shoulder pretty good and she was done till I told her the AR kicks like a .22.

with the 30-06, shes a great shot 90% of the time. her first deer was at 250 yds with one and dropped on the first shot. She's welcome to use whatever is comfy for her. If she doesn't pick the AR, I'm going to lay out a sleeping bag and set up a blind on a big hill overlooking a harvested field, a marsh, a pond and a pasture and use the AR for short to medium stuff and the 7 mag for the long shots.
 
#23 ·
Left the 7mm home and just took the AR out over lunch with a 130 rounds.

They're all gone now :D

Tony, I don't know how you could only shout 40 rounds through this gun while you owned it b/c it's a BLAST to shoot. I have it dialed in out to a hundred yards, yeah, I was prolly playing with it a bit to go through that much ammo, but I had fun. :laughing: