range adjustments

[fishandshoot]

Help needed folks

 

I've set my rifle scope at 25 yards (length of the garden), if I have a target at 40 etc... yards how much do I compensate ie. how much higher should I aim?

 

Been shooting shotguns for 15 years and never had to worry about such things!!!!

 

Any tips or tricks appreciated :yp:

[neil]

What calibre is it??

[fishandshoot]

HW77K in .22

[BOLTA]

Hi,

 

First of all, shoot some pellets and see what happens. In the end you have to do this so you will know your gun. This is a very important thing to know !

 

But you can also get the ChairGun program from this website : www.fotosoft.co.uk/chairgun/

This program is made for airguns - a good program.

 

Cheers - Bolta

[sharp_shooter]

Presumably you have some fields to shoot over so go up there and set up some targets at varying ranges and aim at the centre on all of them. Any shots closer than the zero of your scope should be high, any shots further than your zero should then be low. Try to find a place well away from any quarry so you dont scare them off though.

Hope this helps.

 

SS

[Fisherman Mike]

As Bolta and Sharp Shooter have said Fish, The only way to accurately do this without going into advanced ballistic calculus or buying a very expensive rangefinder scope is by trial and error.

 

I would suggest you set up an accurate range and set targets at 15, 20, 25 30, 35 & 40m. I would be tempted to zero the scope at 30m which would be the optimum range for most quarry. Then take test shots at each other target aiming at dead centre without trying to compensate for elevation.

 

Measure the distance from pellet group to centre (over or under) at each target range and write them down use a - for hold under and a + for hold over, they are then easily memorised.

 

A typical set of results might be;

 

15m -5cm, 20 -3cm, 25 -1.5cm, 30 0cm. (zero) 35 +1cm, 40 +2cm,

 

I work in m but you could just as easy use imperial measurements.

 

This is a basic method and it helps if when testing you use a form of test bench to rest the gun on. I use a bipod or a workmate or similar.

 

Have fun.

 

FM.

 

Ps you may find that because if the arced trajectory of the .22 the there may be a corresponding zero to 30m at a closer range ie 15 m. This is normal.

[fishandshoot]

Thanks folks I'm off out now to give it a go!!!