'Miracle Device' Cuts Groups in Half — Guaranteed
Well, yes, that headline is a come-on. But there’s truth in the promise. The “miracle device” to which we refer is a simple wind indicator.
Remarkably, many shooters who spend $3000.00 or more on a precision rifle don’t bother to set up windflags when they shoot. Whether you’re a competitive shooter, a varminter, or someone who just likes the satisfaction of drilling small groups, a set of windflags is something you should take to the range every time. And yes, if you pay attention to your windflags, you can easily cut your group sizes in half. Here’s proof…
Miss a 5 mph Shift and Double Your Group Size
In the following table we show the effect of a 5 mph crosswind at 100, 200, and 300 yards. You may say to yourself, “well, I’d never miss a 5 mph let-off.” Consider this — if a gentle 2.5 mph breeze switches from 3 o’clock to 9 o’clock, you’ve just missed a 5 mph net change. What will that do to your group? Look at the table below to find out.
Values from Point Blank Ballistics software for 500′ elevation and 70° temperature.
Imagine you have a 6mm rifle that shoots half-MOA consistently in no-wind conditions. What happens if you miss a 5 mph shift (the equivalent of a full reversal of a 2.5 mph crosswind)? Well, if you’re shooting a 68gr flatbase bullet, your shot is going to move about 0.49″, nearly doubling your group size. With a 105gr VLD, the bullet moves 0.28″ … not as much to be sure, but still enough to ruin a nice small group. What about an AR15, shooting 55-grainers at 3300 fps? Well, if you miss that same 5 mph shift, your low-BC bullet moves 0.68″. That pushes a half-inch group well past an inch. If you had a half-MOA capable AR, now it’s shooting worse than 1 MOA.
If you’ve already invested in an accurate rifle with a good barrel, you are “throwing away” accuracy if you shoot without wind flags. You can spend a ton of money on fancy shooting accessories (such as expensive front rests and spotting scopes) but, dollar for dollar, nothing will potentially improve your shooting as much as a good set of windflags, used religiously.
Which Windflag to buy? Click here to view many windflag designs.
Video from Carbon River Windflags
Aussie Windflag photo courtesy BenchRestTraining.com (Stuart and Annie Elliot).
Similar Posts:
- "Miracle Device" Cuts Groups in Half — Guaranteed
- If You’re Not Using Wind Flags You’re Throwing Away Accuracy
- Use Wind Flags — Don’t Throw Away Accuracy
- Windflags — Reasons to Use Them, Even If You Don’t Compete
- Windflags — Definitely Worth Using Even If You Don’t Compete
Tags: Windflag
I don’t see the relation between the statement made before the above table and the data in the table.
Can someone else explain what I’m supposed to be looking for?
Pao:
The amount a bullet moves when a 2.5 mph left to right wind switches to a 2.5 mph right to left wind is the same as a 5 mph pick-up from one direction, say 3 o-clock. The table shows how much the bullet will move at 100/200/300 yards if there is a 5 mph wind change, 90 degrees to the path of flight. That’s also the same change in Point of impact you’ll see if a 2.5 mph left switches to 2.5 mph right.