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Extreme Long Range Hunting & Shooting (ELR)
17 mph wind hold?
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<blockquote data-quote="fishwater" data-source="post: 974852" data-attributes="member: 38378"><p>I am looking for a little input here please.</p><p></p><p>I was shooting the other day and encountered something weird.</p><p></p><p>A little background info: I am shooting 300 GR. OTM's out of a .338 LMAI that I got on here 2nd hand. I have had the gun 3 months and it has always shot very good. I have shot just over 120 rounds through it so far. I have a NF ATACR, and the scope is mounted totally straight. I have a Holland's level bubble, and I have tested it at 100 yards by dialing up 40 MOA and the bullet hits directly over a 100 yard zero shot, (OK maybe it's off by 1/4 inch or so... good enough for me... LOL.) Anyways, the point is that the scope is properly mounted and I do not cant the rifle when I shoot.</p><p></p><p>The shot...</p><p></p><p>Yesterday I was shooting at a 14" gong at 1220 yards. The shot was -4 deg downhill. The wind was coming in steady straight from the left at about 4 mph according to my Kestrel 2500. (The forecast for that day was a 10 mph wind.) I entered all my data into shooter, and it came back with a 30.6 MOA elevation hold, and a 3.0 MOA left windage correction. I shot once and nobody saw anything... Hmmm...</p><p></p><p>Shot again, and we saw an impact, I was perfect height, but I was around 6 MOA right! So I dialed in another 6 1/2 MOA and was on target. I proceeded to hit the 14" gong 3 times and even a milk jug at 1220 yards with that solution.</p><p></p><p>What I am wondering is: In order for me to get the shooter app to tell me the proper 9.5 MOA windage hold for that day, (121.7 inches, or about 10 feet.) I needed to tell it that there was a 17 mph left to right wind! </p><p></p><p>I was shooting across a VERY wide open canyon, and the wind was coming in right off a lake, right up the valley. But where I was it was only 4 mph. Elevation was around 2000 feet.</p><p></p><p>Now, I am a novice long range shooter, but this seems a little weird to me..</p><p></p><p>Any ideas on what may have been happening that day? Or is it normal for the wind to be highly concentrated coming through a canyon like that? 17 mph seems a little high to me.</p><p></p><p>Thanks.</p></blockquote><p></p>
[QUOTE="fishwater, post: 974852, member: 38378"] I am looking for a little input here please. I was shooting the other day and encountered something weird. A little background info: I am shooting 300 GR. OTM's out of a .338 LMAI that I got on here 2nd hand. I have had the gun 3 months and it has always shot very good. I have shot just over 120 rounds through it so far. I have a NF ATACR, and the scope is mounted totally straight. I have a Holland's level bubble, and I have tested it at 100 yards by dialing up 40 MOA and the bullet hits directly over a 100 yard zero shot, (OK maybe it's off by 1/4 inch or so... good enough for me... LOL.) Anyways, the point is that the scope is properly mounted and I do not cant the rifle when I shoot. The shot... Yesterday I was shooting at a 14" gong at 1220 yards. The shot was -4 deg downhill. The wind was coming in steady straight from the left at about 4 mph according to my Kestrel 2500. (The forecast for that day was a 10 mph wind.) I entered all my data into shooter, and it came back with a 30.6 MOA elevation hold, and a 3.0 MOA left windage correction. I shot once and nobody saw anything... Hmmm... Shot again, and we saw an impact, I was perfect height, but I was around 6 MOA right! So I dialed in another 6 1/2 MOA and was on target. I proceeded to hit the 14" gong 3 times and even a milk jug at 1220 yards with that solution. What I am wondering is: In order for me to get the shooter app to tell me the proper 9.5 MOA windage hold for that day, (121.7 inches, or about 10 feet.) I needed to tell it that there was a 17 mph left to right wind! I was shooting across a VERY wide open canyon, and the wind was coming in right off a lake, right up the valley. But where I was it was only 4 mph. Elevation was around 2000 feet. Now, I am a novice long range shooter, but this seems a little weird to me.. Any ideas on what may have been happening that day? Or is it normal for the wind to be highly concentrated coming through a canyon like that? 17 mph seems a little high to me. Thanks. [/QUOTE]
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