Boyd Allen
Active member
There is ballistic software that will tell you how much deflection you will get. Some may be available online for free. Not having actually witnessed the condition you described it is hard to be precise, but generally, discounting the effects of a 15 mph wind is probably a mistake. As to the use of wind flags, this could be a lengthy subject but the main idea is to shoot all the shots in a particular group in as close to the same condition as possible. This is not to say that each flag in a set will be showing the same thing, but that each looks the same as it did when previous shots were taken. IMO, trying to shoot really small groups without the aid of some sort of wind flags is a waste of time, and money.
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