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November 16, 2015, 08:29 AM | #26 |
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Thanks emcon5, I'll set the first drop column to "inches" and the second column to "MOA or MIL" depending on which scope I use.
Stag - good read on that link, thanks.
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What direction did that last shot at Kennedy come from? |
November 16, 2015, 08:45 AM | #27 | |
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"Everyone speaks gun."--Robert O'Neill I am NOT an expert--I do not have any formal experience or certification in firearms use or testing; use any information I post at your own risk! |
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November 16, 2015, 10:13 AM | #28 | |
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Or, you could zero the rifle at 100 yards, then shoot at a farther distance and see how much the actual drop is. You can then tweak the velocity in the ballistic table until the prediction matches the measured results. |
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November 17, 2015, 02:43 AM | #29 | |
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I have to think it would be way more useful, and far more fun, to just go to the range and see where the bullet hits when you pull the trigger. I know that for me, it doesn't mean a hoot if the ballistics table says there's a 10" drop at 200 yards when zeroed at 100, if my group at 100 is already 4". I can't predict squat at 200, except the group size surely won't be smaller than 8". *Muzzle 'velocity' is kind of an unfortunate term, because what we really mean when we use it is bullet speed at the muzzle. 'Velocity' specifically means the combination of speed (feet per second, for example) and direction. It's an important distinction when talking calculations, models and math...not too important when talking about shooting and hitting something. Where the distinction IS important is when it's important to know that some force has to be applied to anything to change its velocity...even if its speed doesn't change. An example that's easy is a kid sitting on a merry-go-round, being spun at constant rpm by his associates. His speed isn't changing...but his velocity definitely is. That change in velocity is why he has to 'hang on'...it takes force to change velocity, and one way to change velocity to change the direction of motion--regardless of any change in the speed of that motion.
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NRA Benefactor Member “If I had to live my life again, I'd make the same mistakes, only sooner.” T Bankhead "I think only the authorities should have weapons." The New American Electorate Last edited by Bongo Boy; November 17, 2015 at 02:55 AM. |
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November 17, 2015, 08:33 AM | #30 | |
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That's funny bongo - makes sense to me!
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What direction did that last shot at Kennedy come from? |
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