Originally Posted by daniel brothers
I just went onto Nikon's Spot On website and put in.... 243, 55 gr HP, 3900 fps, with a 30 mph cross wind.... and the drift chart said it only drifted 10.28 inches at 200 yds. So... if that's all it is... then most shots would be closer to aiming on hair or right near it... and especially with most coyotes running on a angle instead of exactly cross wind.
It sure opened my eyes up.
Lead on a running target is not the same as wind drift .
The lead that you may need is also a function of your swing style , the time it takes you to fire the shot ( brain to trigger time ) , the speed of the bullet and the speed , range and angle of the target .
I can assure you that if a coyote is running at 30 MPH at 90 degrees at say 200 yards you will need a lot more than 10 inch lead . Something like 6 feet will be needed to hit him behind the shoulders . Also wind drift can add or subtract from that lead .
There is no way I would be using a 55 grain bullet for running shots. Use a heavy bullet to try and take wind out of the equation as much as possible.
The rolling of car tires with targets in them is a great idea