Longest springer shot?

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Offline Pandur_HR

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Longest springer shot?
« on: January 27, 2019, 01:09:06 PM »
Does anyone know what is longest springer shot?

I'm shooting a springer, and already shot 150m (162 yd).

Since it is a winter time and range is closed, I am preparing for more at spring time. Upgrading status at 100 yd, and go further in distance.

Today I finally managed to set my springer to aim at 250m (273 yd) at 6.5x zoom. Spring or summer time, I am going to try to hit it.

I used adjustable mount 65 MOA + 25 MOA shims + increase 12 MOA on turrets, and I got the target at the bottom most dot at 6.5x zoom.

300m (328 yd) I found quite challenging. I would need extra equipement. And the speed is soo low, I'm not sure is there a point in trying.

Anyone knows what is a longest springer shot?

Not shooting downhill, but in a straight line. Grouped shots (not one hit in a few hundreds tries).
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Offline Blacktalon6

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Re: Longest springer shot?
« Reply #1 on: January 27, 2019, 01:31:47 PM »
You may have to hold it at a 89 deg angle but a few hundred yards may be possible  ;D
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Re: Longest springer shot?
« Reply #2 on: January 27, 2019, 02:28:27 PM »
Wow Ivan...
I have no input but am very interested in your triumph!
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Offline TF89

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Re: Longest springer shot?
« Reply #3 on: January 27, 2019, 02:29:52 PM »
Airgungearshow has a video of shooting I think at 200 yards and hitting 3 inch or less target, sub 12 foot pound.  Not sure of the actual distance, regardless impressive.
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Offline Pandur_HR

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Re: Longest springer shot?
« Reply #4 on: January 27, 2019, 02:40:31 PM »
Chairgun said I can do 550 yd at 25 deg. But I don't think I would hit anything. :-) Anyway, I am still crazy enough to try it. :-) Missed target is the only thing to loose. :-)

Preparing rifle (.22) is an easier part. I would machine 25 deg rail insert and make it high. To keep the barrel away from the line of sight. Aiming I would have.
Barrel is 19", with 1:22" twist rate. That would be OK.

18 gr pellet at low speed is a problem. Starting from 250m (half of total range), and at 250m is already too slow.

Air is never perfectly still. Combined with pellet destabilizing, POI spread could be huge.I am expecting it on 250m, I will see in a spring.

Thanks Dave. As I tought. 200m is still OK. 250m might be the border or unreachable for current springers. I will see.

Anyone know for further than 200 yd?
« Last Edit: January 27, 2019, 03:12:24 PM by Pandur_HR »
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Offline rsterne

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Re: Longest springer shot?
« Reply #5 on: January 27, 2019, 03:40:03 PM »
Springers actually tend to have a very low ES (velocity variation) from shot to shot.... and wind drift will be at a minimum in the 750-850 fps range (midrange velocity). If you can get it to group at a given size at 100 yards, no reason on a still day you can't get a group 2-4 times that big at 200 yards.... Work your way out slowly.... You will be surprised at how little elevation you need on a scope rail at 100 yards (20-30 MOA, ie less than 1/2 deg.). figure on 4-6 times that at 200 yards.... somewhere around 2 deg. would be a good place to start, depending on what your velocity is....

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Offline Pandur_HR

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Re: Longest springer shot?
« Reply #6 on: January 27, 2019, 04:31:16 PM »
That is true Bob. 25 MOA on rail for 100m, and I have it centered at 20x zoom. 150m is at almost last dot at 20x zoom. No need to touch the turrets.

200m I do with 63 MOA, and 3 MOA with turrets. To get it on last dot at 20x zoom.

250m 63 MOA on rail, 12 MOA on turrets to get it on last dot at 6.5 zoom.

I have 30mm tube scope with 80 MOA total vertical adjustement. So, 12 MOA up (52/28) is still in safe area. Less then 3/4 up. I can safely use up to 20 MOA. More, better not, since magnum springer is in a game.

Unfortunately, 27 MOA I have to use for barrel droop compensation and zero on 25 m. Leaving scope in optical zero.

Speed at 250m is 225 fps.

Pellets will be selected. All, same weight and dimensions, to decrease ES as much as possible.

BTW I can try with 15.9 gr pellets. Ballistic is better, just as grouping up to 50m. There would be no need to touch turrets except on 250m, only few MOA or not even that. But those pellets are still not tested on long range. 18.13 gr performed well. And wind would interfere more with lighter pellets. Speed at 250m would be 265 fps with 15.9 gr.

Muzzle speeds

18.13 gr = 826 fps
15.9 gr = 892 fps

JSB pellets. BCs are multiple (changing with speed), taken from your testing Bob. :-) Strelok pro as calculator, GA drag.

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« Last Edit: January 27, 2019, 05:25:36 PM by Pandur_HR »
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