Knowing that the bullet drop can be as much as 50 to 60 inches at 500 yards when shooting my Mosin-Nagant, I wanted some type of formula so that I could figure the necessary changes to be on target and not have to shoot excessive rounds to figure it out.
You can securely download the file here:
Mathematics for Precision Shooters (79.2 kb)
Hope you find this download useful. It's a small file but has lots of good formulas that are easy to use, especially if you're lacking in the math department.
Please let me know what you think about this information. Thanks.
Staying above the water line!
Riverwalker
Posts
6 comments:
Thats a cool link Riverwalker, much thanks for giving us a link to it. I was unaware of its existence. I am a math challenged individual, but maybe this can school me some stuff. Great motivation anyway, ballistics are interesting.
My Garand and scoped 1917 3006 are sighted to strike 6 high at 100
In the field police up rifles of defunct enemies .........
any bottleneck rifle cartridge 5.56/223, 762x39 308, 3006, 30-30,
303 Brit, 762x54R, 7.65 Arg 300 HH 300 Win Mag etc .............
Sight it to strike point of aim at 25 yards and it will strike roughly 3
inches high at 100 yards, about at POA at 200 yards and about 16
low at 300 yards.
That will keep bad guys from overrunning your position.
be happy. The closer they are the easier to hit them : - )
Trust me BTDT one round to the brisket puts them out of the fight.
It is roughly 24" from nose to belly button.
762x54R is 150 gr bullet @ 2700 fps.
.Speer nr 10 reloading manual
.308 150 grain flat base spitzer bullet BC 389
page 526
MV.........100 yards...200........300.......400........500
2900.......4.3.............5.1............0........-12.2......-33
2800.......4.7.............5.5............0........-13.2......-35.8
2700.......5.1.............6...............0........-14.4......-39
2600.......5.6.............6.5............0........-15.7......-42.5
2500.......6.2.............7.2............0........-17.1......-46.5
Speer .308 165 spitzer boattail BC .477 @ 2700 MV
100...200.....300.....400.......500
4.9....5.7......0.......-13.3.....-35.7
Speer .308 180 spitzer boattail BC .540 @ 2600 MV
100....200.....300.....400......500
5.2.....6.1......0.......-14.......-37.4
30-30 win
speer .308 150 gr flatnose bc .268 mv 2200
page 510
100....200....300.......400......500
4.1......0......-17.......51.8.....-109.9
To: anonymous 12:17
You're welcome.
RW
To: vlad
Thanks vlad! I figured you'd come through with some great info.
Thanks again.
RW
In this download, the author has it backwards on both how to convert from inches to centimeters, and how to convert centimeters to inches. He states, "To convert centimeters to inches, multiply the inches by 2.54." It should be "To convert inches to centimeters..."
Obviously you can't start with centimeters and look for an answer in inches by multiplying inches, because that's what you're trying to get to!
Then, he says, “To convert inches to centimeters, multiply the inches by .3937.” This is incorrect. There are 2.54 centimeters per inch, so you need to multiply inches by 2.54, or divide inches by .3937.
I didn't thoroughly read through the rest of the sheet, but these jumped out right away.
I got a little off track perhaps in my first paragraph regarding where the author stated "to convert centimeters to inches," but instead was using inches to centimeters numbers. To convert centimeters to inches, you would divide centimeters by 2.54, or multiply centimeters by .3937.
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