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500 yards

skychaser53skychaser53 Member Posts: 344 ✭✭✭
edited July 2008 in Perry Shooter Competition Shooting and Reloading Forum
Does anyone know how much a 22-250 {45 to 55 grams) will drop from 400 to 500 yards ?
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Comments

  • CapnMidnightCapnMidnight Member Posts: 8,038 ✭✭
    edited November -1
    How fast is it going? I have a program that will tell you, pejsa rifle ballistics. Got to have bullet weight and FPS, it will give drop for a rifle sighted in for 100yds, out to 1000yds. It will also give wind drift out to 1000yds. My 45-70 load with 350gr bullet @2060fps drops 12' at 1000yds, but only drops 7 1/2" at 200. It's a great program, I bought mine for $23.00 from Pejsa.com
    W.D.
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  • FEENIXFEENIX Member Posts: 10,559 ✭✭✭
    edited November -1
    Try this ...

    http://www.snipercountry.com/ballistics/

    Good luck!
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  • guntech59guntech59 Member Posts: 23,188 ✭✭✭
    edited November -1
    ...or this.

    http://www.eskimo.com/~jbm/calculations/traj/traj.html
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  • skychaser53skychaser53 Member Posts: 344 ✭✭✭
    edited November -1
    CapnMidnight
    using the S.W.A.G. therory(scientific wild * guess) and my 1992 gun digest which only goes out to 400 yards, a 55 gm bullet would leave the muzzle at 3680. at 400 yrds it is doing 1832(book). I swag it at 1450 fps at 500 yards.
    thx guntech and feenix for the software and calculator links. it will take me awhile to figure out how to use them :o)
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  • nononsensenononsense Member Posts: 10,928 ✭✭✭✭
    edited November -1
    skychaser53,

    It's important to get your weights correct, first. Grams and GRAINS are not interchangeable. Bullet weights are expressed in grains.

    45 GRAMS = 694.455 GRAINS

    55 GRAMS = 848.788 GRAINS.

    My thought is that you mean GRAINS since the GRAM weight are way too heavy to shoot in your 22-250 Rem.

    Other sources for bullet trajectories are the ammunition manufacturers themselves. Remington, Winchester and Federal all have the trajectory information about all of their cartridge/load combinations on their websites. They even have a method of showing you comparisons between loads.

    Best.
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  • skychaser53skychaser53 Member Posts: 344 ✭✭✭
    edited November -1
    nononsense,
    thanks, that would make heavy bullet, lol. thx for the manufacturer info, I'm headed for the Remington site now.
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  • skychaser53skychaser53 Member Posts: 344 ✭✭✭
    edited November -1
    I remember now, I was there(Rem site) last week lol.. The site only shows bullet drop out to 300 yards. It looks as if they have a nice program for 39$ that will give you lots of data out to 1000 yards.

    More than I need though. I'll probably go out in a field put up a big piece of cardboard and see what happens. :o) I'm guessing a 3 foot drop. who knows lol

    Guntech.... I'm getting better with your calculator, but Remington doesn't show a bullet co-effecient for the "UMC". It does for their other bullets.
    http://www.remington.com/products/ammunition/ballistics/comparative_ballistics_results.aspx?data=PRA2250RB*L22504*R22501
    It seems the lower the co-efficient , the more the bullet falls with your calculator.

    It looks like I'm going to get a 20 in drop (using a coefficient for another Rem bullet)from 400 to 500 or about 40in from a 200 yd zero. That puts me in the ballpark. thx everyone for the help !
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  • nononsensenononsense Member Posts: 10,928 ✭✭✭✭
    edited November -1
    skychaser53,

    Remington doesn't show the Long Range trajectory for the UMC loads but they do for the other loads. Try Winchester or Federal, their sites have good information also.

    Here is a calculator that hasn't been mentioned. It's a free download and has some pretty good graphics:

    http://www.huntingnut.com/index.php?name=News&file=article&sid=3

    Enjoy!

    Best.
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  • Tailgunner1954Tailgunner1954 Member Posts: 7,734 ✭✭
    edited November -1
    quote:Originally posted by skychaser53
    It seems the lower the co-efficient , the more the bullet falls with your calculator.


    It's not just his calculator, it's all of the calculators. Considering that BS is a "wind resistance" measure it kinda makes sense.

    Just as a FYI, the BC# is based off a specific projectle specification, and that projo was given a arbitary value of 1.000, so yes, it is possible to have a BC greater than 1 (not commonly seen until you get into the much bigger projectles IE 1" and larger, although a couple of 50cal's have gotten there)
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  • nononsensenononsense Member Posts: 10,928 ✭✭✭✭
    edited November -1
    skychaser53,

    I've posted most of these explanations before so here's a link to a good description of what BC really means:

    http://www.loadammo.com/Topics/September01.htm

    This is an Excel Spreadsheet of commercially manufactured bullets and their Ballistic Coefficients:

    http://www.frfrogspad.com/g1bclist.xls

    Best.
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  • 336marlin336marlin Member Posts: 201 ✭✭
    edited November -1
    Probably 20" to 35"; thats just between 400 & 500 yards; depending on which one you use. Hornady and Sierra manuals have great tables in them with velocity, energy, and drop. Also, sierra has developed a great web site explaining ballistics; http://www.exteriorballistics.com/
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