Strelok, angles, and rangefinder.

[k_h_d]

I am a little confused on how to use my rangefinder and strelok at steep angles.


If i use mu my range finder at close range and it tells me an target at 11 yards is at an angle of -22 degrees (shooting towards the ground) with a calculated yardage of 10 yards.

So if I input the distance in strelok as 10, it seems I should keep the angle at 0 to calculate MOA clicks.

then it would seem that if I took the true yardage of 11 and told strelok the angle was -22 degrees that I would get the exact same MOA calculation adjustment.

however, this is not the case and there is 6 clicks difference between the two methods.

Any ideas? I was hoping to not have to take the extra step of inputting the angle into strelok.

what do other strelok users find works the best for them?

 

[Guest]

Your shooting inside the distance at which you have to compensate for scope height...

 

[k_h_d]

So if I was at a further distance (say 35 yards) and shooting at the same steep angle would strelok calculate the same MOA for the like scenarios?

 

[Guest]

"k_h_d"So if I was at a further distance (say 35 yards) and shooting at the same steep angle would strelok calculate the same MOA for the like scenarios?

No. They are not the same scenario. You can input the data for a 35/36 yard comparison as easily as you can for a 10/11 yard comparison.

The ballistic distance to the target is the level distance, the horizontal component of the range to the target, always. If you ranged a target at 243 meters and you measured the angle at +32 degrees. The horizontal component of that range is cos(32)*243. So 203 meters. You would tell strelok 243 meters for the range and +32 degrees for the angle. It would handle the details internally and give you a correction to 203 meters (as if you were shooting level).

The thing you are seeing with your original example is that the shot is VERY close to the gun. The bullet/pellet is still RISING to line of sight. In the case of an air rifle that happens very quickly and so you get results that appear not to make sense. Run your experiment at longer range and you will see what you are expecting to see.

I think the best thing for you to do is spend some time shooting with strelok before you spend any time second guessing it. I thought about making a drawing to explain this but such graphs can be made in Chairgun and I leave that as an exercise for you.

 

[k_h_d]

Playing with ChairGun is helping to understand.

since my range finder has a built in angle gives horizontal calculated range can I simplify things and just use the horizon calculated range and always use 0 degrees in strelok and ChairGun?

 

[Guest]

Also remember that both up and down angle reduce the angle compensated distance, ie a +30 degree up angle and -30 degree down angle would result in same angle compensated distance.