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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
1cm clicks too much for long range hunting??
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<blockquote data-quote="PNWdude67" data-source="post: 2961203" data-attributes="member: 110615"><p>What is interesting is that if someone wants to shoot at greater distance they need to first understand that MOA and MRAD have nothing to do with inches or centimeters beyond 100 yards or 100 Meters. Respectively. Neither system was created to work with either imperial or metric they work the same for yards or meters or whatever unit of measurement you measure distance to target with. The only time a click equals 1/4 inch or 1 cm is at 100 yards or Meters and doesn't really matter. The shooter should stop thinking in terms of inches or centimeters and only focus on measuring in either MOA or MRAD. For example, how many MOA or MRAD is the drop or drift at x distance …when zeroing at 100 yards think I need to adjust x MOA or MRAD using your reticle to measure!! Yes, that's all we need to consider. Reading and understanding a wind call for your rifle system is much more important than 1/4 MOA or .1 Mil elevation adjustment at distance beyond 400 yards than anything. I prefer MRAD first focal plane optics. MOA FFP optics are equally effective. Why do I prefer MRAD? Two reasons. First, Most of the buddies we shoot with hunting or at field matches shoot MRAD so spotting and communication is simpler. Second, there's a mathematical anomaly that exists with MRAD that makes calling wind between 300-1000 yards a little easier when measuring distance in yards. With a given bullet and velocity we can enter the known variables into a ballistic calculation… there's a few apps for this…. And discover a full mph wind value that lines up like this. 300 yards .3 mil drift 400 yards .4 mil drift 500 yards .5 mil drift… and so on out to 1000 yards 1.0 mil drift. Beyond that this relativity breaks down. It's called "gun number" or "mile per hour gun". A faster shooting high BC bullet like a 7mm shooting 195 EOL at 3000 fps has a high number like 9 or 10 mph and a slower low BC like a .308 win shooting 175 sierra match king at 2580 fps is 4 MPH. Basically it means an x mph wind will blow your bullet 1 mil at 1000 yards. So a 1/2x mile and hour wind at 556 yards will create a .2-.3 mil drift at that distance. Mind blown yet? lol here's a specific example: the mule deer I harvested this year was at 556 yards. My 6.5 156 EOL bullet @ 2760 FPS in a 7 mph wind is blown 1.0 mil at 1000 yards and .55 mil at 550. See the pattern? The wind was 6-8 MPH at 1/2 value (quartering) from my left. I don't use a kestrel btw, just learn this **** it's not that hard in winds less than 15 mph. Blowing harder than that? i choose not to take long shots in game. So I knew I had a .3-.4 mil left hold wind drift adjustment to make on the deer at 550 yards and the FFP reticle to measure I held .2 inside left edge of the vital zone, .3 was center and .4 was inside right edge. If the 7mph wind was directly from the left the hold would have been .4 left edge .5 center and .6 right edge of vital zone. Full value 14 mph wind? Double those holds or don't take that shot. Conclusion: 1/10 mil radian adjustments are perfect for long range hunting. No need for 1/20. Learn your load and how to read wind. That's how we make precise first round engagements. Most of all, know the limits of your rifle which includes you.</p></blockquote><p></p>
[QUOTE="PNWdude67, post: 2961203, member: 110615"] What is interesting is that if someone wants to shoot at greater distance they need to first understand that MOA and MRAD have nothing to do with inches or centimeters beyond 100 yards or 100 Meters. Respectively. Neither system was created to work with either imperial or metric they work the same for yards or meters or whatever unit of measurement you measure distance to target with. The only time a click equals 1/4 inch or 1 cm is at 100 yards or Meters and doesn’t really matter. The shooter should stop thinking in terms of inches or centimeters and only focus on measuring in either MOA or MRAD. For example, how many MOA or MRAD is the drop or drift at x distance …when zeroing at 100 yards think I need to adjust x MOA or MRAD using your reticle to measure!! Yes, that’s all we need to consider. Reading and understanding a wind call for your rifle system is much more important than 1/4 MOA or .1 Mil elevation adjustment at distance beyond 400 yards than anything. I prefer MRAD first focal plane optics. MOA FFP optics are equally effective. Why do I prefer MRAD? Two reasons. First, Most of the buddies we shoot with hunting or at field matches shoot MRAD so spotting and communication is simpler. Second, there’s a mathematical anomaly that exists with MRAD that makes calling wind between 300-1000 yards a little easier when measuring distance in yards. With a given bullet and velocity we can enter the known variables into a ballistic calculation… there’s a few apps for this…. And discover a full mph wind value that lines up like this. 300 yards .3 mil drift 400 yards .4 mil drift 500 yards .5 mil drift… and so on out to 1000 yards 1.0 mil drift. Beyond that this relativity breaks down. It’s called “gun number” or “mile per hour gun”. A faster shooting high BC bullet like a 7mm shooting 195 EOL at 3000 fps has a high number like 9 or 10 mph and a slower low BC like a .308 win shooting 175 sierra match king at 2580 fps is 4 MPH. Basically it means an x mph wind will blow your bullet 1 mil at 1000 yards. So a 1/2x mile and hour wind at 556 yards will create a .2-.3 mil drift at that distance. Mind blown yet? lol here’s a specific example: the mule deer I harvested this year was at 556 yards. My 6.5 156 EOL bullet @ 2760 FPS in a 7 mph wind is blown 1.0 mil at 1000 yards and .55 mil at 550. See the pattern? The wind was 6-8 MPH at 1/2 value (quartering) from my left. I don’t use a kestrel btw, just learn this **** it’s not that hard in winds less than 15 mph. Blowing harder than that? i choose not to take long shots in game. So I knew I had a .3-.4 mil left hold wind drift adjustment to make on the deer at 550 yards and the FFP reticle to measure I held .2 inside left edge of the vital zone, .3 was center and .4 was inside right edge. If the 7mph wind was directly from the left the hold would have been .4 left edge .5 center and .6 right edge of vital zone. Full value 14 mph wind? Double those holds or don’t take that shot. Conclusion: 1/10 mil radian adjustments are perfect for long range hunting. No need for 1/20. Learn your load and how to read wind. That’s how we make precise first round engagements. Most of all, know the limits of your rifle which includes you. [/QUOTE]
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1cm clicks too much for long range hunting??
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