Shooting Sports USA - September 2010 - 18

FEATURE // WIND
PHoTo By RoBERT LANgHAM

ExpErt forum:

WIN
SHootING
(see Figure 1). When the bullet turns to align itself with the oncoming airflow, the aerodynamic drag force, which is parallel to the flow is no longer aligned with the line of sight. In this way, the aerodynamic drag has a lateral component that pulls the bullet away from the line of sight, in the downwind direction. It’s that lateral component of aerodynamic drag that causes wind deflection during long distance shooting. Note also that the bullet only turns a fraction of a degree, which is why bullet holes in targets aren’t noticeably oblong.

Experienced shooters know the general theory of wind deflection during long distance shooting. read what these experts have learned through practical experience.

By NrA Staff Introduction by Bryan Litz, Head Ballistician, Berger Bullets, and author of Applied Ballistics

INTRoDUcTIoN
MEcHANIcS oF WIND DEFLEcTIoN Many shooters falsely believe that the wind pushes on the side of a bullet as it flies downrange, and that’s what causes it to deflect. That description is inaccurate. So how does it work? A bullet is spin-stabilized, similar to a gyroscope. The term “stability,” as it pertains to bullet flight, means that the projectile will align its axis with the oncoming airflow. In other words, it flies point forward into the air. When a crosswind is present, it has the effect of altering the direction from which the air approaches the bullet

18 SSUSA SEPTEMBER 2010



Shooting Sports USA - September 2010

Table of Contents for the Digital Edition of Shooting Sports USA - September 2010

Shooting Sports USA - September 2010
Meet Your NRA Competitive Shooting Division
Contents
Shooter’s News
Range Bag
Score Sheet
National High Power Silhouette Championship
Sight Adjustment Savvy
Expert Forum: Wind Shooting
2010 National Pistol Matches
A Page From History
Coming Events
Member Info./Classified Ads
Shooting Sports USA - September 2010 - Shooting Sports USA - September 2010
Shooting Sports USA - September 2010 - Meet Your NRA Competitive Shooting Division
Shooting Sports USA - September 2010 - 3
Shooting Sports USA - September 2010 - Contents
Shooting Sports USA - September 2010 - 5
Shooting Sports USA - September 2010 - 6
Shooting Sports USA - September 2010 - Shooter’s News
Shooting Sports USA - September 2010 - Range Bag
Shooting Sports USA - September 2010 - 9
Shooting Sports USA - September 2010 - 10
Shooting Sports USA - September 2010 - Score Sheet
Shooting Sports USA - September 2010 - 12
Shooting Sports USA - September 2010 - 13
Shooting Sports USA - September 2010 - National High Power Silhouette Championship
Shooting Sports USA - September 2010 - 15
Shooting Sports USA - September 2010 - Sight Adjustment Savvy
Shooting Sports USA - September 2010 - 17
Shooting Sports USA - September 2010 - Expert Forum: Wind Shooting
Shooting Sports USA - September 2010 - 19
Shooting Sports USA - September 2010 - 20
Shooting Sports USA - September 2010 - 21
Shooting Sports USA - September 2010 - 2010 National Pistol Matches
Shooting Sports USA - September 2010 - 23
Shooting Sports USA - September 2010 - 24
Shooting Sports USA - September 2010 - 25
Shooting Sports USA - September 2010 - A Page From History
Shooting Sports USA - September 2010 - Coming Events
Shooting Sports USA - September 2010 - 28
Shooting Sports USA - September 2010 - 29
Shooting Sports USA - September 2010 - 30
Shooting Sports USA - September 2010 - 31
Shooting Sports USA - September 2010 - 32
Shooting Sports USA - September 2010 - 33
Shooting Sports USA - September 2010 - 34
Shooting Sports USA - September 2010 - 35
Shooting Sports USA - September 2010 - 36
Shooting Sports USA - September 2010 - 37
Shooting Sports USA - September 2010 - 38
Shooting Sports USA - September 2010 - Member Info./Classified Ads
Shooting Sports USA - September 2010 - Cover4
https://www.nxtbook.com/nxtbooks/nra/ssusa_202109
https://www.nxtbook.com/nxtbooks/nra/ssusa_202108
https://www.nxtbook.com/nxtbooks/nra/ssusa_202107
https://www.nxtbook.com/nxtbooks/nra/ssusa_202106
https://www.nxtbook.com/nxtbooks/nra/ssusa_202105
https://www.nxtbook.com/nxtbooks/nra/ssusa_202104
https://www.nxtbook.com/nxtbooks/nra/ssusa_202103
https://www.nxtbook.com/nxtbooks/nra/ssusa_202102
https://www.nxtbook.com/nxtbooks/nra/ssusa_202101
https://www.nxtbook.com/nxtbooks/nra/ssusa_202012
https://www.nxtbook.com/nxtbooks/nra/ssusa_202011
https://www.nxtbook.com/nxtbooks/nra/ssusa_202010
https://www.nxtbook.com/nxtbooks/nra/ssusa_202009
https://www.nxtbook.com/nxtbooks/nra/ssusa_202008
https://www.nxtbook.com/nxtbooks/nra/ssusa_202007
https://www.nxtbook.com/nxtbooks/nra/ssusa_202006
https://www.nxtbook.com/nxtbooks/nra/ssusa_202005
https://www.nxtbook.com/nxtbooks/nra/ssusa_202004
https://www.nxtbook.com/nxtbooks/nra/ssusa_202003
https://www.nxtbook.com/nxtbooks/nra/ssusa_202002
https://www.nxtbook.com/nxtbooks/nra/ssusa_202001
https://www.nxtbook.com/nxtbooks/nra/ssusa_201912
https://www.nxtbook.com/nxtbooks/nra/ssusa_201911
https://www.nxtbook.com/nxtbooks/nra/ssusa_201910
https://www.nxtbook.com/nxtbooks/nra/ssusa_201909
https://www.nxtbook.com/nxtbooks/nra/ssusa_201908
https://www.nxtbook.com/nxtbooks/nra/ssusa_201907
https://www.nxtbook.com/nxtbooks/nra/ssusa_201906
https://www.nxtbook.com/nxtbooks/nra/ssusa_201905
https://www.nxtbook.com/nxtbooks/nra/ssusa_201904
https://www.nxtbook.com/nxtbooks/nra/ssusa_201903
https://www.nxtbook.com/nxtbooks/nra/ssusa_201902
https://www.nxtbook.com/nxtbooks/nra/ssusa_201901
https://www.nxtbook.com/nxtbooks/nra/ssusa_201812
https://www.nxtbook.com/nxtbooks/nra/ssusa_201811
https://www.nxtbook.com/nxtbooks/nra/ssusa_201810
https://www.nxtbook.com/nxtbooks/nra/ssusa_201809
https://www.nxtbook.com/nxtbooks/nra/ssusa_201808
https://www.nxtbook.com/nxtbooks/nra/ssusa_201807
https://www.nxtbook.com/nxtbooks/nra/ssusa_201806
https://www.nxtbook.com/nxtbooks/nra/ssusa_201805
https://www.nxtbook.com/nxtbooks/nra/ssusa_201804
https://www.nxtbook.com/nxtbooks/nra/ssusa_201803
https://www.nxtbook.com/nxtbooks/nra/ssusa_201802
https://www.nxtbook.com/nxtbooks/nra/ssusa_201801
https://www.nxtbook.com/nxtbooks/nra/ssusa_201712
https://www.nxtbook.com/nxtbooks/nra/ssusa_201711
https://www.nxtbook.com/nxtbooks/nra/ssusa_201710
https://www.nxtbook.com/nxtbooks/nra/ssusa_201709
https://www.nxtbook.com/nxtbooks/nra/ssusa_201708
https://www.nxtbook.com/nxtbooks/nra/ssusa_201707
https://www.nxtbook.com/nxtbooks/nra/ssusa_201706
https://www.nxtbook.com/nxtbooks/nra/ssusa_201705
https://www.nxtbook.com/nxtbooks/nra/ssusa_201704
https://www.nxtbook.com/nxtbooks/nra/ssusa_201703
https://www.nxtbook.com/nxtbooks/nra/ssusa_201702
https://www.nxtbook.com/nxtbooks/nra/ssusa_201701
https://www.nxtbook.com/nxtbooks/nra/ssusa_201612
https://www.nxtbook.com/nxtbooks/nra/ssusa_201611
https://www.nxtbook.com/nxtbooks/nra/ssusa_201610
https://www.nxtbook.com/nxtbooks/nra/ssusa_201609
https://www.nxtbook.com/nxtbooks/nra/ssusa_201608
https://www.nxtbook.com/nxtbooks/nra/ssusa_201607
https://www.nxtbook.com/nxtbooks/nra/ssusa_201606
https://www.nxtbook.com/nxtbooks/nra/ssusa_201605
https://www.nxtbook.com/nxtbooks/nra/ssusa_201604
https://www.nxtbook.com/nxtbooks/nra/ssusa_201603
https://www.nxtbook.com/nxtbooks/nra/ssusa_201602
https://www.nxtbook.com/nxtbooks/nra/ssusa_201601
https://www.nxtbook.com/nxtbooks/nra/ssusa_201512
https://www.nxtbook.com/nxtbooks/nra/ssusa_201511
https://www.nxtbook.com/nxtbooks/nra/ssusa_201507
https://www.nxtbook.com/nxtbooks/nra/ssusa_201510
https://www.nxtbook.com/nxtbooks/nra/ssusa_201509
https://www.nxtbook.com/nxtbooks/nra/ssusa_201508
https://www.nxtbook.com/nxtbooks/nra/ssusa_201507
https://www.nxtbook.com/nxtbooks/nra/ssusa_201506
https://www.nxtbook.com/nxtbooks/nra/ssusa_201505
https://www.nxtbook.com/nxtbooks/nra/ssusa_201504
https://www.nxtbook.com/nxtbooks/nra/ssusa_201503
https://www.nxtbook.com/nxtbooks/nra/ssusa_201502
https://www.nxtbook.com/nxtbooks/nra/ssusa_201501
https://www.nxtbook.com/nxtbooks/nra/ssusa_201412
https://www.nxtbook.com/nxtbooks/nra/ssusa_201411
https://www.nxtbook.com/nxtbooks/nra/ssusa_201410
https://www.nxtbook.com/nxtbooks/nra/ssusa_201409
https://www.nxtbook.com/nxtbooks/nra/ssusa_201408
https://www.nxtbook.com/nxtbooks/nra/ssusa_201407
https://www.nxtbook.com/nxtbooks/nra/ssusa_201406
https://www.nxtbook.com/nxtbooks/nra/ssusa_201405
https://www.nxtbook.com/nxtbooks/nra/ssusa_201404
https://www.nxtbook.com/nxtbooks/nra/ssusa_201403
https://www.nxtbook.com/nxtbooks/nra/ssusa_201402
https://www.nxtbook.com/nxtbooks/nra/ssusa_201401
https://www.nxtbook.com/nxtbooks/nra/ssusa_201312
https://www.nxtbook.com/nxtbooks/nra/ssusa_201311
https://www.nxtbook.com/nxtbooks/nra/susa_201310
https://www.nxtbook.com/nxtbooks/nra/ssusa_201309
https://www.nxtbook.com/nxtbooks/nra/ssusa_201308
https://www.nxtbook.com/nxtbooks/nra/ssusa_201307
https://www.nxtbook.com/nxtbooks/nra/ssusa_201306
https://www.nxtbook.com/nxtbooks/nra/ssusa_201305
https://www.nxtbook.com/nxtbooks/nra/ssusa_201304
https://www.nxtbook.com/nxtbooks/nra/ssusa_201303
https://www.nxtbook.com/nxtbooks/nra/ssusa_201302
https://www.nxtbook.com/nxtbooks/nra/ssusa_201301
https://www.nxtbook.com/nxtbooks/nra/ssusa_201212
https://www.nxtbook.com/nxtbooks/nra/ssusa_201211
https://www.nxtbook.com/nxtbooks/nra/ssusa_201210
https://www.nxtbook.com/nxtbooks/nra/ssusa_201209
https://www.nxtbook.com/nxtbooks/nra/ssusa_201208
https://www.nxtbook.com/nxtbooks/nra/ssusa_201207
https://www.nxtbook.com/nxtbooks/nra/ssusa_201206
https://www.nxtbook.com/nxtbooks/nra/ssusa_201205
https://www.nxtbook.com/nxtbooks/nra/ssusa_201204
https://www.nxtbook.com/nxtbooks/nra/ssusa_201203
https://www.nxtbook.com/nxtbooks/nra/ssusa_201202
https://www.nxtbook.com/nxtbooks/nra/ssusa_201201
https://www.nxtbook.com/nxtbooks/nra/ssusa_201112
https://www.nxtbook.com/nxtbooks/nra/ssusa_201111
https://www.nxtbook.com/nxtbooks/nra/ssusa_201110
https://www.nxtbook.com/nxtbooks/nra/ssusa_201109
https://www.nxtbook.com/nxtbooks/nra/ssusa_201108
https://www.nxtbook.com/nxtbooks/nra/ssusa_201107
https://www.nxtbook.com/nxtbooks/nra/ssusa_201106
https://www.nxtbook.com/nxtbooks/nra/ssusa_201105
https://www.nxtbook.com/nxtbooks/nra/ssusa_201104
https://www.nxtbook.com/nxtbooks/nra/ssusa_201103
https://www.nxtbook.com/nxtbooks/nra/ssusa_201102
https://www.nxtbook.com/nxtbooks/nra/ssusa_201101
https://www.nxtbook.com/nxtbooks/nra/ssusa_201012
https://www.nxtbook.com/nxtbooks/nra/ssusa_201011
https://www.nxtbook.com/nxtbooks/nra/ssusa_201010
https://www.nxtbook.com/nxtbooks/nra/ssusa_201009
https://www.nxtbook.com/nxtbooks/nra/ssusa_201008
https://www.nxtbook.com/nxtbooks/nra/ssusa_201007
https://www.nxtbook.com/nxtbooks/nra/ssusa_201006
https://www.nxtbook.com/nxtbooks/nra/ssusa_201005
https://www.nxtbook.com/nxtbooks/nra/ssusa_201004
https://www.nxtbook.com/nxtbooks/nra/ssusa_201003
https://www.nxtbook.com/nxtbooks/nra/ssusa_201002
https://www.nxtbook.com/nxtbooks/nra/ssusa_201001
https://www.nxtbook.com/nxtbooks/nra/ssusa_200912
https://www.nxtbook.com/nxtbooks/nra/ssusa_200911
https://www.nxtbook.com/nxtbooks/nra/ssusa_200910
https://www.nxtbook.com/nxtbooks/nra/ssusa_200909
https://www.nxtbook.com/nxtbooks/nra/ssusa_200908
https://www.nxtbook.com/nxtbooks/nra/ssusa_200907
https://www.nxtbook.com/nxtbooks/nra/ssusa_200906
https://www.nxtbookmedia.com