I was hunting last week in conditions that often had me trying to calculate for cross wind drift.

Is there a good rule of thumb for windage drift when shooting across the wind? Most of the calculations that I can find are for rifle bullets which have a much smaller cross section, are going faster and shooting further.

For example, I was taught for 30.06 the rule was 2 inches per 10 mph of cross wind. 4 at 200 yards, 7 at 300 yards, 11 at 400 yards, etc. Double for 20 mph, double again for 30 mph. Go home at 40 mph.

Chubber

It depends on your exact muzzle velocity and the ballistic coefficient of the bullet.

Chubber when it comes down to cross wind, your guess is as good as any ones. When you have a 10mph. cross wind at the muzzle, it could be 15mph. at 50yds. and 5mph at 100yds. No one can tell you what the wind speed is down range. I went to the range last week with my 50cal. Omega and shot five round. At 200yds. useing Hornady 240gr. xtp's and two 50 gr. Prrodex pellets my group was 12' in diameter. On a calm day this same load and rifle at the same distance will shot a 4" group. On a day when the wind is blowing I keep my shots at 100yds. or less. Good luck hunting and with the wind Oldsnow.