SKS point of impact

zuke

zuke

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What would be the hight to sight in an SKS at 25 yds. to get a 100 yd. zero?
My eye's arent what they used to be, so I thought I'd save some ammo and get it in the ball park at 25.
 
What he said. However, most SKS ammo is loaded to produce velocities around 2300fps. We'll use that as an avg. At that velocity, the trajectory of a 123gr bullet is:
-1.5" at the muzzle
.19" (or about 3/16") at 50yds
0 at 100yds

I would extrapolate that if you zeroed for bulls-eye at 25yds, you would be VERY close to zero at 100yds.

Better to zero for point blank range, though. Gives you hold on out to 175 yds
 
Any idea what the point blank zero height would be?
I've been blasting with it but recently picked up a Tapco sight adjustment tool so thought I'd finally get it done right.
 
If you have a 25 meter zero it will be almost excately the same @ 200 meter's. Also if you have a 50 meter zero you will still be on paper @ 100 meter's. Hope this helps ;)
This is from a 123 grain FMJ bullet out of an 20 inch barrrel
25 meter zero it will be 3/4 of an inch high @ 200 meter's
50 meter zero it will be 1/3 of an inch high @ 100 meter's
50 meter zero will give you 2 & 1/2 inch high shot @ 200 meter's
Click to expand...
 
zuke said:
Any idea what the point blank zero height would be?
I've been blasting with it but recently picked up a Tapco sight adjustment tool so thought I'd finally get it done right.
Click to expand...
Point blank zero height (175yds) is:
muzzle= -1.5"
50yds= 1 7/16"
100yds= 2.5"
Extrapolate for 25yds is difficult, but between -9/16 and -5/8 somewhere
If you can see your target at 50yds, then zero for that at 1 7/16" high. Should be very close out to 175yds.
 
So if i were to set up the 100m at 25m I'd be 3/4 inch high at 200m?
1 7/16 high at 50m will give me 175m zero

So how do I go about setting up the 300m battlesight zero?

Do I set the sight at 1 7/16 at 50m and be done with it?
 
Download and install this free Remington ballistic software.

http://www.remington.com/pages/news-and-resources/downloads/remington-shoot-software.aspx

The calculations only use different remington ammunition to generate the graphs and charts but thats OK.

Select whatever calibre and similar weight/type bullet you are using, make sure you key in your particular sight height above bore and let the program produce a trajectory chart for you.

It will be close enough to show whats going on.
 
There was some really good posts on sighting in the SKS with milsurp ammo, using both 100 meter sight and the 300m/battle setting. I looked for to post it cuz someone had a much better way of saying than I did, but didn't find it.
 
zuke said:
So if i were to set up the 100m at 25m I'd be 3/4 inch high at 200m?
1 7/16 high at 50m will give me 175m zero

So how do I go about setting up the 300m battlesight zero?

Do I set the sight at 1 7/16 at 50m and be done with it?
Click to expand...
No at 200yds you would be just over 2" low.

If you set the sight so that you are 1 7/16" high at 50m, you will be fine. That will shoot as well as the rifle can with you behind it out to 175 yds.
 
zuke said:
So how do I go about setting up the 300m battlesight zero?
Click to expand...
That is a true question that still has yet to be resolved.
This is due to the fact that the x39's round @ 300 meter's is truly @ it's outer limit's with accuracy. Especially with the iron sight's on the SkS. Hence the reason why the V.C. during the Vietnam War would wait until the enemy would be in close quarters's before they would indicate there attack.
Also it's the same reason why when we have a "Gong Shoot" @ 200 meter's it is so much fun & so unpredictable for a winner.
 
zuke said:
So how do I go about setting up the 300m battlesight zero?
Click to expand...

Once you have zeroed your sights for 100 meters, you have also zeroed them automatically for 200, 300, 400, and so on. You just need to set the rear leaf to the appropriate number position.

The battle sights which we all know is the rear most position of the sight leaf, was designed, I believe, so that in the heat and excitement of battle, all a soldier has to do is slide the rear sight all the way to the rear and he is all set to effectively hit imperialist dogs from 10 meters all the way to 300 meters.

Grab your SKS and look at the rear sight from the side. Set to battle sight position. Then set to #3 (the 300 meter setting). You will note that both positions raise the rear sight leaf to the same height. The b.p. simply allows the soldier to go the 300 meter setting very quickly, with no fumbling around.

Simple and smart Russian thinking, IMO.


Satain, if we can find a 300 meter rifle range, a 300 meter gong shoot should be more fun.
 
sksDrop.PNG


Print the table from here:
http://www.gunsim.com/save.html?name=Lapua%20Hunting%20%207.62x39mm%20Russian&rang=300.0&bc=0.28&velo=2300.0&grou=2.0&zero=100.0&wind=10.0&tars=0.0&temp=59.0&pres=29.92&drag=0&bulw=123.0&alti=0.0&humi=0.0&sigh=1.2&uphi=0.0&tarw=10.0&tarh=10.0&yard=true&tab=2

Point blank zero depends on the height of the target.
 
From Wikipedia, so take with a grain of salt, but this makes a lot of sense:
Maximum point blank range for military use

This sight setting for maximum point blank range is also referred to in the military as Battle Zero. Soldiers are instructed to fire at any target within this range by simply placing the sights on the center of mass of the enemy target. Any errors in range estimation are tactically irrelevant as a well-aimed shot will hit the torso of the enemy soldier. The current trend for elevated sights and higher velocity cartridges in assault rifles is in part due to a desire to extend the maximum point blank range, which makes the rifle easier to use.
Click to expand...

For the SKS, it seems the Maximum Point Blank range is 300 meters. At any range from 0 meters all the way out to 300 meters, most well-aimed shots fired should fall within a 12 - 16 inch group, centered at the Point-of-Aim. When aimed at Center-of-Mass, the SKS should be sufficiently accurate (in the context of battle rifles) all the way to 300 yards. Within point blank range, the 7.62 x 39 round should be capable of stopping the average imperialist dog as well.
 
Juster said:
Maximum point blank range depends on target size.
Click to expand...

Exactly. For a hunting rifle, where the target could be a 4 inch deer heart, point blank is relative to that size target and of course the rifle and cartridge matter too. A high velocity round with flat trajectory will definitely have a different, rather, longer, point blank range than a high trajectory low velocity round.

In the SKS world, considering the Russians designed it with a 300 meter battle sight range, I am willing to bet that 300 meters, is its Point-Blank-Range as well. The SKS with its standard military 7.62 x 39 round, will enjoy high probability of hitting a man-sized target when aimed at center of mass, between 0 meter distance and 300 meters.
 
easyrider604 said:
Exactly. For a hunting rifle, where the target could be a 4 inch deer heart, point blank is relative to that size target and of course the rifle and cartridge matter too. A high velocity round with flat trajectory will definitely have a different, rather, longer, point blank range than a high trajectory low velocity round.

In the SKS world, considering the Russians designed it with a 300 meter battle sight range, I am willing to bet that 300 meters, is its Point-Blank-Range as well. The SKS with its standard military 7.62 x 39 round, will enjoy high probability of hitting a man-sized target when aimed at center of mass, between 0 meter distance and 300 meters.
Click to expand...

General agreement here :).

....To be super pedantic, the presence of adjustable sights means they weren't heavily into Maximum Point Blank Range. The Sten Gun, yes, very MPBR. But generally, yes.
 
easyrider604 said:
Exactly. For a hunting rifle, where the target could be a 4 inch deer heart, point blank is relative to that size target and of course the rifle and cartridge matter too. A high velocity round with flat trajectory will definitely have a different, rather, longer, point blank range than a high trajectory low velocity round.

In the SKS world, considering the Russians designed it with a 300 meter battle sight range, I am willing to bet that 300 meters, is its Point-Blank-Range as well. The SKS with its standard military 7.62 x 39 round, will enjoy high probability of hitting a man-sized target when aimed at center of mass, between 0 meter distance and 300 meters.
Click to expand...
Actually closer to 350 if all things considered. If an avg round (let's say 2300 fps) were zeroed at 300yds. Anything short of that would hit no more than 10.5 inches high (well within the man sized target if centre of mass) and would drop almost 25 inches at 400yds (centre of mass would still be testicles)
 
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