Accuracy at 1000 mtrs

[woody]

I really enjoy my stalking, but have started to do field work on gongs now, I want to learn to shoot out to longer ranges for fun!
My chosen flavour is. 260 for this in an Accuracy International rifle.
I can hit a 30" gong at 800 but missing at 1000mtrs, I am using both a kestrel and strelok and both give the same readings, I seem to be shooting 3 ft high and to the right. Why?
Is there something else I need to input into the devices.
Any feedback from people who do this would be great.
Cheers

 

[old_n07]

Hi,

What weight bullet are you using and what velocity are you pushing it at? as if you have inputted a lower velocity and an incorrect ballistic co-efficient into the app it can all have an effect on the data it outputs

3 feet out sounds a lot but to put it into perspective 36" at 1000 yards is around 3.5 MOA as 1 MOA at 1000 yards is 10 inches

The drop on my creedmoor according to Strelok at 800 yards is 173" (20.6 MOA) at 800 increasing to 322 inches (30.77 MOA) at 1000 yards so almost doubling.

 

[enfieldspares]

I could hit a Figure 11 at 1,000 yards with my SMLE and iron sights. When I was in my pomp. I doubt I could do it now. The theory is that what you group size is at 100 yards will be, multiplied by ten, your group size at 1,000 yards. Practice at home, six yards is good enough, with a reasonably spring powered air rifle. Using a 'scope that has a reticule similar to the one on your big rifle. It'll teach you follow through better than almost anything else.

 

[paul o']

I really enjoy my stalking, but have started to do field work on gongs now, I want to learn to shoot out to longer ranges for fun!
My chosen flavour is. 260 for this in an Accuracy International rifle.
I can hit a 30" gong at 800 but missing at 1000mtrs, I am using both a kestrel and strelok and both give the same readings, I seem to be shooting 3 ft high and to the right. Why?
Is there something else I need to input into the devices.
Any feedback from people who do this would be great.
Cheers

my 280 drops -326.79 inches or 31.21 moa = -125 clicks at 1000 but only -181.45 or -21.66 moa or = - 87 clicks @800 you would't think 200 yrds would steal that much drop but it do's my chart is with my scope set up 7mm 162 eld m . So as per old no 7 get your dope and test it in the field with all things being right it should print you on the target wind ect taken into the factor . most ranges are North South'ish to help do away with having to deal with earth spin lol . Then fine tune you scope and loads also are you still supersonic at 1000

 

[Ronin]

I really enjoy my stalking, but have started to do field work on gongs now, I want to learn to shoot out to longer ranges for fun!
My chosen flavour is. 260 for this in an Accuracy International rifle.
I can hit a 30" gong at 800 but missing at 1000mtrs, I am using both a kestrel and strelok and both give the same readings, I seem to be shooting 3 ft high and to the right. Why?
Is there something else I need to input into the devices.
Any feedback from people who do this would be great.
Cheers

Check your data at zero is 100% correct

MV

Temp

Altitude

Humidity

Angle to target

Scope height

Bullet BC


A minor error at zero will proportionately increase the delection of error at longer ranges

No point prevaricating at what may be wrong - return to source and baseline - re assess and start again

Suggest from there putting out targets at say 500 - 1000 in 100 mfr increments thats will show your actual drop in real terms (not predicted) then you will know (from zero) how far out your actual solutions are

One other factor - scope - is it tracking perfectly

Another - elements- wind flows and is deflected along the bullet path, is the wind causing the bullet tro drift high and right due to topography of the land near the target (though wind has more of an effect near the firing point than at the target) it is still a factor at target or the final "thirds" distance


Most apps with accurate data should enable a hit on a slightly sub 3 moa target (which is what 30" is effectively at 1000 mtrs) providing the rifle ammuntion and end user have the ability to shoot accurately

 

[woody]

Thanks folks, the rifle is bang on at 100.
I was shooting on the bonnet of a truck, thinking about it I did not check the level on the Sphur mount (I don't like it, not on my eye level)
Bullet speed 2709 scenars 139
It says 130 clicks.
I did not put humidity in.

Cheers

 

[Edinburgh Rifles]

what platform?
Bipod? Bench/Ground? Loading bipod? Cant/Swivel?

Apps are only as good as the data you put in
but you can correct actual drop on apps like AB

Take it you mean you are missing the predicted first round shot
Where is your second shot going?

 

[woody]

what platform?
Bipod? Bench/Ground? Loading bipod? Cant/Swivel?

Apps are only as good as the data you put in
but you can correct actual drop on apps like AB

Take it you mean you are missing the predicted first round shot
Where is your second shot going?

It's a pheonix off bonnet of truck, velocity of 2709.

 

[woody]

It's a pheonix off bonnet of truck, velocity of 2709.

Second shot very similar looking at the holes in the ground, very cold day so barrel behaving, having a couple of shots then letting it cool.

 

[Edinburgh Rifles]

bonnets are notoriously crap platforms
I would want to be rechecking that off the deck or a bench personally

 

[jb1]

I was Similar drops with the same bullets but lower velocity.
As you've found out when you see the world record 1k target is less thn 1.5 inches it ain't that easy.
Could you see the impact, dont forget the retained energy is not a fat lot at 1k and if your shooting at 3ft gongs they ain't going to swing much let alone move at all.
Your better off shooting into shale/gravel or something similar as a backstop.

And temperature will also have a big impact on drops, most folk zero in nice weather, then stretch the legs and wonder why it's so far out. And check zero at 300 too, 1/8 out at 100 is a foot at 1k

 

[Perthshire High Seat]

I really enjoy my stalking, but have started to do field work on gongs now, I want to learn to shoot out to longer ranges for fun!
My chosen flavour is. 260 for this in an Accuracy International rifle.
I can hit a 30" gong at 800 but missing at 1000mtrs, I am using both a kestrel and strelok and both give the same readings, I seem to be shooting 3 ft high and to the right. Why?
Is there something else I need to input into the devices.
Any feedback from people who do this would be great.
Cheers

I know nothing about the black art of long range shooting, but you say you are shooting 3ft high and right, if this is the case can you not adjust your sights or just aimlower to left ???.?
Good luck
Ray

 

[1066]

Trying to work out what's going wrong with just a couple of shots at gongs at 1000 yds is a big ask. It would give you more information if you were shooting a groups on an actual target, this would give you some idea of group dispersion and exactly how much "off" you are. You say 2709v what sort of string did you check, what was the ES? Just a little cant at 1000 yds makes a considerable difference. A shot with a little cant, at the top of you group dispersion with a slightly higher velocity, add in a little tail wind and you are soon two or three MOA off.

 

[Yorric]

I agree with what Ed says. The best position for accurate long range shooting is prone. with a bench position a poor second best - Shooting off a bonnet is way down the list of positions & can't be a good basis for precision long range shooting. The difference is greatest with heavier recoiling rifles.
Get the basics right first, then practise practise & more practise. Shoot a lot & gather/record all parameters, conditions & results.

Ian

 

[jb1]

I know nothing about the black art of long range shooting, but you say you are shooting 3ft high and right, if this is the case can you not adjust your sights or just aimlower to left ???.?
Good luck
Ray

Yes you can do that but the idea of this style of shooting is to dial in the drops at various ranges. You find that one day your on the money, then another, due to it being a different day of the week it 'll goes pear shaped. Temperature, air pressure, hight above sea level even just change from Monday to Tuesday seems to throw a spanner in the works.

 

[jcampbellsmith]

I use Strelok Pro, but I don't use it often enough. I do find that sometimes I have entered the data incorrectly. I suggest resetting your ballistic app data and starting afresh taking note of the variables identified by Ronin. I suggest you take notes each time you go out and refine your app/scope settings over a period of months.

Best regards

JCS

 

[Rob1562]

Most long range shooting disciplines are not conducted from the bonnet of a pick-up and there's a very good reason for that !
Shooting off the bonnet is ok for foxing at 2-400 yards....relatively large target for the distance involved. FWIW I would check zero from prone, adjust if necessary then check all your data and re-shoot 1000 yds from prone and see how you get on.
Regards, Rob.

 

[old_n07]

Thanks folks, the rifle is bang on at 100.
I was shooting on the bonnet of a truck, thinking about it I did not check the level on the Sphur mount (I don't like it, not on my eye level)
Bullet speed 2709 scenars 139
It says 130 clicks.
I did not put humidity in.

Cheers

That is the same bullet and speed (within 5 f/s) that I am using, for 1000 yards Strelok+ is telling me 32.37 MOA which is 129 clicks and for 1000m it is 37.88 MOA or 152 clicks.

Is your target set at 1000 yards or metres and is the app you are using set to the same units?

Also you say you don't like the set up of the Sphur as it isn't on your eye level - if you aren't getting a consistent head placement each time this can have an increased detrimental effect on accuracy at the longer distances compared to short range.

 

[Perthshire High Seat]

Yes you can do that but the idea of this style of shooting is to dial in the drops at various ranges. You find that one day your on the money, then another, due to it being a different day of the week it 'll goes pear shaped. Temperature, air pressure, hight above sea level even just change from Monday to Tuesday seems to throw a spanner in the works.

Definately a black art, so good luck with it ( got a feeling its skill and not luck) dont think my high seats would be stable enough for long range stuff but if anyone wants to try LOL
Cheers
Ray

 

[woody]

Hi,

I use Strelok Pro, but I don't use it often enough. I do find that sometimes I have entered the data incorrectly. I suggest resetting your ballistic app data and starting afresh taking note of the variables identified by Ronin. I suggest you take notes each time you go out and refine your app/scope settings over a period of months.

Best regards

JCS

Yes, I double checked my data from when I shot at 800 which was 80 clicks, just checked it on the app and it said 84 clicks, no idea what's happened. I may set the BC back to what factory say.