Thread: Help with Ballistic D.O.P.E

Try using the Swarovski ballistic app online. also things like the sight height above the bore measurement is critical.

You don't need a chronograph unless you are doing load development.
Just watch that video and it will become clear!

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I've had a look at strelok. the 0.975 moa that the Swaro dials equals .24375 of an inch at 100 yards. This can be entered into Strelok up to 3 digits, so 0.244. The actual difference at the terminal end is very small out to 500m and would not account for the discrepancy you experienced. So when you say you worked backwards from 400 yards, do you mean you used the Trajectory validation function in Strelok? If you use this it should give you a pretty accurate velocity. After that double check your input. Projectile BC, Sight height above the bore. As I said earlier you should also log into and use the Swaro ballistic app, it is great for setting up the distances for the coloured dots on the scope. I have a Z5 3.5-18 x 44 and always use both apps, they complement each other.

@zeropac any chance you could send a screen shot of where I can enter the scope correction into strelock.
Correct verified at 400 through strelock for velocity.
The following day managed to shoot 400 and 500 however was 8 inches low at 500.
I have since watched the video @andyanimal31 and using my 500yard data verified by bc and it’s put my 400 yard very close. I will check a few different ranges and make sure everything else now lines up.
Thanks for everyone’s input. I have teed up a chronograph so be interesting to compare to now what strelock has come up with.

Here you go, Change the values under scope click units
I agree with Andyanimal. You don't have to have a Chronograph to setup your scope. How about you PM me with all the input details and I will see what data I get out of Strelok and the Swarovski app.

It could be not enough shots to find the true centre. Hornady (podcast ep. 50) did some testing and found five shot groups averaged +/-0.3" away from the true centre at 100yd. A chronograph will let you know if your velocity calculation is sane without a whole lot of rounds.

Cheers @Magnetite have actauly listened to that podcast. The way they want you to sight in is with a whole box of projectiles haha. I have now managed to get all my data to line up thanks .
Thanks for the offer @zeropak with the comments I’ve managed to figure out a couple small things which is now lined up all my data. I will check a couple of different ranges just to be sure but my 500 and 400 line up so in theory all the rest should now be good.

Originally Posted by mattstr

Cheers @Magnetite have actauly listened to that podcast. The way they want you to sight in is with a whole box of projectiles haha. I have now managed to get all my data to line up thanks .
Thanks for the offer @zeropak with the comments I’ve managed to figure out a couple small things which is now lined up all my data. I will check a couple of different ranges just to be sure but my 500 and 400 line up so in theory all the rest should now be good.

Excellent. Good to hear.

Originally Posted by mattstr

I’ve managed to figure out a couple small things which is now lined up all my data.

Do tell...

I verified the bc in strelock like said in the comments also changed the scope data as discussed. This matched up the amount of clicks at 500 to the correct amount of clicks at 400 ��. I am yet to shoot at shorter distances to make sure that all in between is correct.
So thanks to everyone for the help much appreciated. Might be time to concider an MOA turret .