Thread: A New Trick for an Old Dog

Greetings All,
A friend has a rifle with one of the Swarovski scopes with the fancy dots for setting range. He has test shot it at 200, 300 and 400 metres. and asked me to set the scope up for him. The dot turrets had been set up for an earlier load, I had a couple of goes at verifying the trajectory and the adjustments needed by calculation but was getting nowhere. Hint anybody that claims they are as mentally sharp at 75 as they were at 30 clearly has a defective memory. After a little while the light went on. I had the chronographed velocity from my 35P and the BC for the projectile so dialled up the Hornady Ballistic Tool and fiddled with the zero distance until the 200 metre drop matched what my friend had measured. Next the trajectory for 300 and 400 metres from the table were adjusted for the current drops dialled into the scope. This matched pretty much dead on with the measured point of impact. Make the adjustments and job done
There was little point in me testing the results as he will do that. He shoots mostly prone with a bipod and no doubt holds the rifle differently so he can do the final testing and I can make any final adjustments needed.
Regards Grandpamac.