.308 for long range?

Discussion in 'Rifle Talk' started by 870 ExpressMag, Jun 23, 2005.

  1. 870 ExpressMag

    870 ExpressMag Guest

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    i live near camp perry ohio and i work at an airport for american airlines so when the national matches are at camp perry i see a lot of nice rifles come through the airport...my question is...for the 1000 yd competitions..why do they use .308? ballistics tables that i had read show they drop around 50 or so inches at 500 yds....thats going to more than double at 1000 i would think.....if thats the case how much hold over do they have to hold in order to lob the bullet that far? i guess this is just something that has always made me curious..and even more so now since i just ordered a .308 barrel for my h and r....
     
  2. wwb

    wwb Super Member

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    The "drop" has nothing to do with it. There isn't a rifle made that shoots "flat" to 1000 yards.

    Once you have the rifle sighted in for the range you're shooting (or you have a scope reticle that lets you figure the "hold over"), you can hit the target. Now what you want is a rifle that shoots the same every time, and has a projectile that's relatively immune to the wind.

    A lot of the guys that shoot at Camp Perry don't shoot .308 rifles.... they shoot .223 rifles. The .223's, however, are not your garden variety AR. They have 1:7 or 1:8 twist heavy barrels, and they typically shoot 75 grain bullets.
     

  3. wired

    wired Guest

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    Yeah, .308 is an accurate cartridge. At extended ranges, it has shown to be more accurate than the .30-06, which is why the .308 eventually took the high road for service rifle competitions. A lot of .223s shoot very accurately as well, and the last I heard, they're starting to take the high road over the .308. Since they're both so popular, they're both offered in a plethora of bullet types and loads, plus the price isn't half bad. They're two of my all-time favorite cartridges. Enjoy the .308!
     
  4. 870 ExpressMag

    870 ExpressMag Guest

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    my next question is what type of optics do they use and magnification?? some i know use open sights or peep sights..how do you consistantly shoot such tight groups with open sights at that far away..that about almost 3/4 mile!
     
  5. wired

    wired Guest

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    Re: re: .308 for long range?

    All the open sights that people use for long-range shooting are aperture-type sights, typically match-grade. Some have aperture rear and post front (like most of the US service rifles have). Match grade ones have a smaller aperture and a thinner front post, plus they are more adjustable (1/2 MOA, though I've seen a case or two of 1/4 MOA). Some have aperture on front and rear. You'll want a small rear and large front to do this, to get the best sight picture. Fulton Armory sells some really good books covering all this (I've got them). I like the aperture rear and post front, myself.

    As for scopes, they're typically high-magnification scopes with 1/2 MOA or 1/4 MOA adjustment. A lot of them have reticles that help with bullet drop calculation. They're all expensive as all hell, and worth every penny in such a situation. Zeiss, Swarovski, Burris, Springfield, and all the other big names. You won't find any Simmons scopes on these things. A buddy of mine shoots .50cal Barretts in the Air Force, and they put Kahles scopes on the ones he shoots. Takes a lickin from .50BMG, and keeps driving tacks. That should say enough about those.