70 yard zero?

[Svt40 fan]

Hi, all i have is about 70 yards to work with for zeroing hunting rifles

i usually sight in at 100 yards.

will a 70 yard zero be close enough to a 100 yard zero in your opinion?

thanks

 

[conor_90]

With most cartridges used for hunting a 25 yard zero will put you on at 200

 

[unstableryan]

No idea of cartridge but anything necked down should maybe be 1.5-2" high at 70 to be on at 200-225.

 

[maple_leaf_eh]

Unless you are trying to shoot the deer in the eyeball, almost any hold on hide with a 70-yd zero will connect.

 

[saskgunowner101]

Quick n dirty sight in is .5" low at 25 meters, and should have you a couple inches high at 100 meters. If you're a decent shot, run your load through jbm calculator, and reverse engineer what you need.

 

[dand883]

I'll often use the winchester ballistics calculator to get a rough idea of where i want to zero, you can put in your caliber and bullt, etc and change where your zero is and see what your +/- is at various ranges

 

[Grizzlypeg]

Use a ballistic calculator to see where that would put you at various other distances. It won't be exact, unless you know your actual velocity, but it will give you the general idea.

I just ran the ballistics on a 308, 150 grain nosler partitition, 2840 muzzle velocity, zeroed at 70 yards.


RANGE (YD) DROP (IN) WIND DRIFT (IN) VELOCITY (FPS) ENERGY (FT-LB)
0 -1.5 -0.0 2840 2686
10 -1.1 0.0 2816 2641
20 -0.8 0.0 2792 2596
30 -0.6 0.1 2768 2552
40 -0.4 0.2 2744 2508
50 -0.2 0.2 2721 2465
60 -0.1 0.3 2697 2423
70 0.0 0.4 2674 2381
80 0.0 0.6 2650 2339
90 0.0 0.7 2627 2299
100 -0.1 0.9 2604 2259
110 -0.2 1.0 2581 2219
120 -0.4 1.2 2559 2180
130 -0.6 1.4 2536 2142
140 -0.9 1.7 2513 2104
150 -1.2 1.9 2491 2066
160 -1.6 2.2 2469 2029
170 -2.1 2.5 2446 1993
180 -2.6 2.7 2424 1957
190 -3.1 3.1 2402 1922

 

[maple_leaf_eh]

^^^^^
That is a 4 1/2" spread from muzzle to 190yds. Good enough for knocking down any deer if the shooter connects to the heart-lung area. One of my old friends taught hunter education. He was a practical man, and said if you could shoot consistently inside a paper plate you would also be successful.

 

[DGY]

^^^^^ exactly! It is nice to shoot 1/2 or MOA, but the reality is 2” groups at 100 is plenty good if you keep you shot inside 200m and if you don’t try to do head shots and keep it in the vitals you will be fine!