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Cabela's Brunton Summit weather station
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<blockquote data-quote="Buffalobob" data-source="post: 343326" data-attributes="member: 8"><p>Depends on what your goals are. If you are only going to shoot 600-800 yards with some type of fast magnum and VLDs then the stand alone wind meter is enough -if- and that is a big IF you have at least the common sense of a runover toad frog.</p><p></p><p>Most people (but not all) can determine if water is frozen which gives you a clue that the temperature is above or below 32 degrees. Once that piece of information has been assimilated you can determine if you are wearing a T-shirt or if you have on a longsleeved shirt. This gives you an idea of whether the temperature is above or below about 50-60 degrees.</p><p></p><p>Humidity can be estimated at 50% unless it is too foggy or rainy to actually shoot and then it doesn't matter in the first place. Now then, if you are hunting horny toads in Death Valley then you can enter 0% humidity and will be all right. In other words try to avoid excessive stupidity when selecting an input.</p><p></p><p>Barometric pressure is moderated by altitude and if you correct for altitude you will be close to average value. Unless you are Miss Piggy and Lost in Space you will surely know whether you are standing knee deep in the surf of the Atlantic Ocean or at 9000 feet in the Rocky Mountains.</p><p></p><p>I often hunt with just a drop chart and a wind meter and leave the PDA in the truck. All of my drop charts have the conditions for which they were calculated on them and then they will have a "correction factor" for each 10 degrees of temperature and another for each 1000 feet of elevation at the range of 1000 yards. If a shot is presented that is beyond the reasonable accuracy of the printed drops then I will start mental math games with the correction factors. </p><p></p><p>If I have my PDA with me then I just enter my estimated temperature, altitude and humidity that seems appropriate for the situation in which I find myself.</p><p></p><p>It is easy enough to verify what I have told you. Go to your ballistic calculator and run your load at whatever your normal conditions are and write down the MOA drop at 500 and 1000 yards. Go back into the program and change only temperature by 10 degrees. Write down the MOA drops at 500 and 1000 yards. The difference between the first drops and the second drops is the "correctionfactor" Do this for all of the environmental variables and and you will be able to answer your own question.</p><p></p><p>The complexity of what I do is that you have to remember when to correct by adding and when to correct by subtracting and sometimes one factor will be added and one will be subtracted. And this may change as the day goes along and you move about and the sun warms things up or a front moves in.</p><p></p><p>If you are not very quick with doing math in your head then the easy option is to just use a PDA and average values and you should not be unduly embarrassed about it. Those of us who were given that gift usually have some deficiency elsewhere to balance it out. </p><p></p><p>So my advice is to make a few calculations with your ballistics program for your expected hunting conditions and rifles and see how much difference it makes.</p><p></p><p>Not a clear cut answer but the best I know to tell you considering the money difference involved.</p></blockquote><p></p>
[QUOTE="Buffalobob, post: 343326, member: 8"] Depends on what your goals are. If you are only going to shoot 600-800 yards with some type of fast magnum and VLDs then the stand alone wind meter is enough -if- and that is a big IF you have at least the common sense of a runover toad frog. Most people (but not all) can determine if water is frozen which gives you a clue that the temperature is above or below 32 degrees. Once that piece of information has been assimilated you can determine if you are wearing a T-shirt or if you have on a longsleeved shirt. This gives you an idea of whether the temperature is above or below about 50-60 degrees. Humidity can be estimated at 50% unless it is too foggy or rainy to actually shoot and then it doesn't matter in the first place. Now then, if you are hunting horny toads in Death Valley then you can enter 0% humidity and will be all right. In other words try to avoid excessive stupidity when selecting an input. Barometric pressure is moderated by altitude and if you correct for altitude you will be close to average value. Unless you are Miss Piggy and Lost in Space you will surely know whether you are standing knee deep in the surf of the Atlantic Ocean or at 9000 feet in the Rocky Mountains. I often hunt with just a drop chart and a wind meter and leave the PDA in the truck. All of my drop charts have the conditions for which they were calculated on them and then they will have a "correction factor" for each 10 degrees of temperature and another for each 1000 feet of elevation at the range of 1000 yards. If a shot is presented that is beyond the reasonable accuracy of the printed drops then I will start mental math games with the correction factors. If I have my PDA with me then I just enter my estimated temperature, altitude and humidity that seems appropriate for the situation in which I find myself. It is easy enough to verify what I have told you. Go to your ballistic calculator and run your load at whatever your normal conditions are and write down the MOA drop at 500 and 1000 yards. Go back into the program and change only temperature by 10 degrees. Write down the MOA drops at 500 and 1000 yards. The difference between the first drops and the second drops is the "correctionfactor" Do this for all of the environmental variables and and you will be able to answer your own question. The complexity of what I do is that you have to remember when to correct by adding and when to correct by subtracting and sometimes one factor will be added and one will be subtracted. And this may change as the day goes along and you move about and the sun warms things up or a front moves in. If you are not very quick with doing math in your head then the easy option is to just use a PDA and average values and you should not be unduly embarrassed about it. Those of us who were given that gift usually have some deficiency elsewhere to balance it out. So my advice is to make a few calculations with your ballistics program for your expected hunting conditions and rifles and see how much difference it makes. Not a clear cut answer but the best I know to tell you considering the money difference involved. [/QUOTE]
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Cabela's Brunton Summit weather station
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