Thread: Large MV variation from trueing

The problem may be that kestrels cal mv should be done within 10% of mach 1.2 (as you said over 900 odd metres)

This is not practical for most of us hunters. I have done cal mv at 500m for a couple of different rounds (similar ballistics to your 260) which may interest you.

Eldx chronoed @2679fps did not require any adjustment.

Sako factory ammo chronoed @2655fps was way off. Walking rounds down I got on target and calibrated the mv at a whopping 2990fps.

Both cal mvs were done within minutes of each other so environment is not a factor.

I'm happy that the curve I have created out to 500m is close enough that any problems with it are hidden by my own shooting ability.

Long way of trying to say; don't read too much into the calibrated mv as the drop chart produced in the end will be solid enough