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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
ballistics question
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<blockquote data-quote="AKSavage" data-source="post: 1280474" data-attributes="member: 95938"><p>The idea of wind drift being based on time of flight (TOF) makes sense, as does the idea that TOF is not purely a factor of line-of-sight distance, and that to be *precise*, corrections will need to be calculated in.</p><p></p><p>A very interesting discussion! Thanks to those with amazing knowledge who responded!</p><p></p><p>My take-away from this is: I'm thinking that as an ESTIMATE of the correct windage, I could use windage listed for the line-of-sight distance on my range card. In other words I would dial the elevation listed for a 500 yard shot and the windage listed for a 600 yard shot. I'll have to run some numbers to see at what point that estimate becomes too inaccurate. I'm thinking that maybe for my example it might still be close enough, but by the time one gets to 1000 yards and beyond the error may become too large.</p><p></p><p>This is where a rangefinder with built-in ballistics software becomes appealing. Instead of carrying a rangefinder AND a smart-phone with a ballistics app, and entering the output from the rangefinder into the ballistics app, the rangefinder gathers all the inputs for you (distance, pressure, temp, and in some cases even wind speed/angle) and immediately outputs the elevation and windage to dial/hold. Something tells me within a few years high-end rifle scopes will do that ALL for us and we'll be able to leave the rangefinder at home too. Sniper's Hide has a thread on just such a scope at the SHOT show this year, although I don't think it has a laser rangefinder built in yet.</p></blockquote><p></p>
[QUOTE="AKSavage, post: 1280474, member: 95938"] The idea of wind drift being based on time of flight (TOF) makes sense, as does the idea that TOF is not purely a factor of line-of-sight distance, and that to be *precise*, corrections will need to be calculated in. A very interesting discussion! Thanks to those with amazing knowledge who responded! My take-away from this is: I'm thinking that as an ESTIMATE of the correct windage, I could use windage listed for the line-of-sight distance on my range card. In other words I would dial the elevation listed for a 500 yard shot and the windage listed for a 600 yard shot. I'll have to run some numbers to see at what point that estimate becomes too inaccurate. I'm thinking that maybe for my example it might still be close enough, but by the time one gets to 1000 yards and beyond the error may become too large. This is where a rangefinder with built-in ballistics software becomes appealing. Instead of carrying a rangefinder AND a smart-phone with a ballistics app, and entering the output from the rangefinder into the ballistics app, the rangefinder gathers all the inputs for you (distance, pressure, temp, and in some cases even wind speed/angle) and immediately outputs the elevation and windage to dial/hold. Something tells me within a few years high-end rifle scopes will do that ALL for us and we'll be able to leave the rangefinder at home too. Sniper's Hide has a thread on just such a scope at the SHOT show this year, although I don't think it has a laser rangefinder built in yet. [/QUOTE]
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Rifles, Bullets, Barrels & Ballistics
ballistics question
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