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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
Rangefinder recommendation
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<blockquote data-quote="vancewalker007" data-source="post: 2470534" data-attributes="member: 66917"><p>The BR4 has 2 wind modes, Base Wind and Vector Based Wind. In Base Wind mode you select ahead of time what you want the speed to be in mph. It assumes the wind is a full value, so if you pick 1 mph the correction you see in the display is going to be for a 1 mph 9 o'clock and 3 o'clock wind. This is similar to the old BR2 wind estimate feature, but it shows it in a single display with elevation when you press fire. Base wind doesn't include the various higher level computations like spin drift or aero jump. Revic suggests the Base Mode for lower wind values on shots less than 1000 yards. So if you range a deer say at 550 yards Horizontal range and you have preset for 1 mph you will see the elevation for 550 yards Horizontal range and a 1 mph full value correction at 550 yards Horizontal. If you measured or estimated wind at 4 mph you would multiply the 1 mph MOA correction by 4 if its a full value. If its a angled 4 mph wind then you use some fraction of the 4.</p><p></p><p>The other wind mode is called Vector Mode. You use the menu button and 2 arrow buttons to set the clock direction of the wind and the estimated speed then press and hold the Fire button to get the elevation and wind correction. This mode includes all the advanced ballistics features for wind.</p><p></p><p>With any system you intend to use to estimate wind correction I suggest you monitor the wind in real-time as you are hunting to have a constant idea of what the wind is doing so you are not scrambling to make an estimate of direction/force value/speed etc. As we are glassing I constantly watch the wind and keep an idea of value/speed in my mind so if a shot becomes available it doesn't take long to set up.</p></blockquote><p></p>
[QUOTE="vancewalker007, post: 2470534, member: 66917"] The BR4 has 2 wind modes, Base Wind and Vector Based Wind. In Base Wind mode you select ahead of time what you want the speed to be in mph. It assumes the wind is a full value, so if you pick 1 mph the correction you see in the display is going to be for a 1 mph 9 o'clock and 3 o'clock wind. This is similar to the old BR2 wind estimate feature, but it shows it in a single display with elevation when you press fire. Base wind doesn't include the various higher level computations like spin drift or aero jump. Revic suggests the Base Mode for lower wind values on shots less than 1000 yards. So if you range a deer say at 550 yards Horizontal range and you have preset for 1 mph you will see the elevation for 550 yards Horizontal range and a 1 mph full value correction at 550 yards Horizontal. If you measured or estimated wind at 4 mph you would multiply the 1 mph MOA correction by 4 if its a full value. If its a angled 4 mph wind then you use some fraction of the 4. The other wind mode is called Vector Mode. You use the menu button and 2 arrow buttons to set the clock direction of the wind and the estimated speed then press and hold the Fire button to get the elevation and wind correction. This mode includes all the advanced ballistics features for wind. With any system you intend to use to estimate wind correction I suggest you monitor the wind in real-time as you are hunting to have a constant idea of what the wind is doing so you are not scrambling to make an estimate of direction/force value/speed etc. As we are glassing I constantly watch the wind and keep an idea of value/speed in my mind so if a shot becomes available it doesn't take long to set up. [/QUOTE]
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Rangefinder recommendation
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