dan brothers
New member
This wind drift problem with different calibers and bullet weight, and speeds, has been bothering me ever since I went on my Montana Field Trip. It seems like my mind has been chasing this subject more than coyotes. I've always thought about bullet drop, but gave the wind drift little attention. I've learned a lot in the last couple of months, but after Lucas turned me onto AmmoGuide.com... it seemed like a whole new world of understanding opened up for me by looking at different caliber.. bullet weight.. fps... and BC's... in it's Ballistic Calculator option.
Most of you SEASONED SHOOTERS already know this stuff, and will be needed to clear up my misunderstanding... but for those Newbies like myself.... having been a bowhunter all my life.... may learn something along with me.
I just ran some different calibers, weights, fps, numbers at the same elevation of 1200 ft.... 40 degree temp... 10 mph, 3 o'clock crosswind... and this is the stuff I found.
If my numbers are off...let me know... it's just a rough sketch.
My whole reason for this, is because too, too, too, many coyotes are living today because of bullet wind drift being on their side.
AND... it's something to do while the crazy weather roars.
Cal.... Gr Bullet... BC... fps... Bullet Drift at 500 yds.
.17 ........30 gr ....... .175 .......3950 .....45.6 inch drift
.20 ......40 vmax ..... .275 ...... 3900 ...... 24.4 inches
.20 ......50 berger ....... .381-? ...... 3950 ...... 23.1
.20 ...... 55 berger ...... .381 ...... 3800 ...... 16.6 in
.20 ............ 55 ...... "" .... "" ...... 3700 ...... 17.5
.22 ...... 55 horn vmax ...... .255 ...... 3950 ...... 26.4
.22 ...... 80 berger ...... .445 ...... 3500 ...... 15.9
.22 ...... 90 berger ...... .551 ...... 3400 ...... 14.1
,243 ...... 58 hor vmx ...... .250 bc ...... 3850 ...... 28.5
.243 ...... 87 vmax ...... .400 bc ......3300-? ...... 20.1 in
.243...... 107 smk ...... .522-? ...... 3050 ...... 16.4
Most of you SEASONED SHOOTERS already know this stuff, and will be needed to clear up my misunderstanding... but for those Newbies like myself.... having been a bowhunter all my life.... may learn something along with me.
I just ran some different calibers, weights, fps, numbers at the same elevation of 1200 ft.... 40 degree temp... 10 mph, 3 o'clock crosswind... and this is the stuff I found.
If my numbers are off...let me know... it's just a rough sketch.
My whole reason for this, is because too, too, too, many coyotes are living today because of bullet wind drift being on their side.
AND... it's something to do while the crazy weather roars.
Cal.... Gr Bullet... BC... fps... Bullet Drift at 500 yds.
.17 ........30 gr ....... .175 .......3950 .....45.6 inch drift
.20 ......40 vmax ..... .275 ...... 3900 ...... 24.4 inches
.20 ......50 berger ....... .381-? ...... 3950 ...... 23.1
.20 ...... 55 berger ...... .381 ...... 3800 ...... 16.6 in
.20 ............ 55 ...... "" .... "" ...... 3700 ...... 17.5
.22 ...... 55 horn vmax ...... .255 ...... 3950 ...... 26.4
.22 ...... 80 berger ...... .445 ...... 3500 ...... 15.9
.22 ...... 90 berger ...... .551 ...... 3400 ...... 14.1
,243 ...... 58 hor vmx ...... .250 bc ...... 3850 ...... 28.5
.243 ...... 87 vmax ...... .400 bc ......3300-? ...... 20.1 in
.243...... 107 smk ...... .522-? ...... 3050 ...... 16.4