Thread: .270 muzzle speed

Greetings All,
This is the target I used to set up my rifle for 600 yard (550 metre) shooting. The little cross high on the target is the calculated trajectory at 200 metres based on a 550 metre zero and my chronographed velocity. The point of impact was deemed close enough and the first shot at the 600 yard target was a little low and a bit to the right. I think that the last was more due to my tiny portable bench rest than anything else. Improvements to it are under way. Making the adjustment in this way worked around any problems with the scope adjustments. The close agreement between predicted and measured velocity at the 600 yard target validated both the BC and software used.
Regards Grandpamac.