sighting in my new 308 - Page 2
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Thread: sighting in my new 308

  1. #11
    Join Date
    Sep 2009
    Location
    Lowcountry, SC
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    457
    Quote Originally Posted by deboer View Post
    that does make sense cause the bullet wouldn't be at the top of its arch yet so i would want to be under by like 2 inches at 25 right??
    Yep. For 100 yards, sight in 1.8" low at 25 yards. For optimized load, (point blank range, deer accurate from 0-280 yards), site in 1.25" low at 25 yards.

    NOTE TO READERS: This applies to a specific load in .308 (Remington .308 Winchester, Pointed Soft Point Core-Lokt bullet in 150 grains). Remington 30.06 with the similar bullet would be 1.83" low at 25 yards, 1.32" low for point blank range of 285 yards.
    Islander's Law: Registration is Preparation for Confiscation

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  3. so 1.8" low at 25 "should be" dead on at what range again??

  4. #13
    Join Date
    Sep 2009
    Location
    Lowcountry, SC
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    457
    Quote Originally Posted by deboer View Post
    so 1.8" low at 25 "should be" dead on at what range again??
    This ^^ (up two posts). But yes, 1.8" low at 25 yards is dead on at 100 yards. You'll have to verify and find tune with your gun, as different barrel lengths will affect bullet velocity. But that should get you right in there.
    Islander's Law: Registration is Preparation for Confiscation

  5. Quote Originally Posted by Islander View Post
    This ^^ (up two posts). But yes, 1.8" low at 25 yards is dead on at 100 yards. You'll have to verify and find tune with your gun, as different barrel lengths will affect bullet velocity. But that should get you right in there.
    i was going to fine tune it but i wanted to know for 25 yrds first

  6. well i got it sighted in at 100 today. now i just need to start getting it into a 1 inch group then start moving out to longer ranges

  7. Quote Originally Posted by deboer View Post
    that does make sense cause the bullet wouldn't be at the top of its arch yet so i would want to be under by like 2 inches at 25 right??
    Depending on bullet weight and barrel type, that should be pretty close.

    Remember, with a new scope mounted make sure you check those mounts every time you leave the range. If they didn't use a thread locker of some type you'll be glad to exercise this rule since it will save you ammo (hopefully) in the long run and should keep you from having your scope fly off the mounts during firing.

    Personally, if you're using this as a dedicated platform for hunting then you should estimate the distance at which you're likely to take most shots given where you will be hunting. Sight it in at that distance and practice with closer and farther distances without changing your zero so you know where your rounds will impact (so you can use Kentucky windage to adjust up or down). This can be where a mil-dot reticle can come in handy.

    I have 2 areas I hunt in, so I'm zeroed at 100 yards and use a mil-dot for deeper range needs.

  8. #17
    Quote Originally Posted by Islander View Post
    This ^^ (up two posts). But yes, 1.8" low at 25 yards is dead on at 100 yards. You'll have to verify and find tune with your gun, as different barrel lengths will affect bullet velocity. But that should get you right in there.


    here is the one from my book. It is for 168 gr match grade ammo. Zeroed at 300yds.

    + mean high
    - means low

    100 yds +5.3"
    200 yds +6.1"
    300 yds Zero
    400 yds -14.3"
    500 yds -38.1"
    600 yds -73.2"
    700 yds -121"
    800 yds -185"
    900 yds -267"
    1000 yds -369


    Another bit of info you might wish to know is bullet drift in a 10 mph cross wind use half values when the wind is coming in at an angle. I don't have ALL the DOPE on angles yet, but I do know that at a 45* angle logic would dictate you use HALF. That's incorrect. There is still a 75% affect on the bullet. So, I guestimate.

    100yds 0.8"
    200yds 3.1"
    400yds 13.6"
    600yds 33.3"
    800yds 64.1"
    1000 yds 107"
    You can run... but you'll just die tired. 3%

  9. #18
    Remember the sight in for a 308 and a 30-06 are the same. Years ago I bought a New Browning BAR and a Baush and Lome Scope. The instruction in one of the boxes said to sight in a 30-06 at 27yards and you would be able to kill a Deer from 0 to 300+ yards. Unless you have money to throw away this is what you should do. lots of Hunters use 25yds I normally follow instructions, mine said to use 27yds. Set the Scope on 4 power during sight in. If you sight in this way it will take 3-5 shots. My Gun has killed a lot of Deer in SC and that's how it's set. If you are just wanting to Target shoot, buy a 22LR, this week I received my new CZ452 Ultra Lux and will be using it for target shooting only. I will be shooting 25, 50 100 and 200yd targets with it.

  10. also i was wondering if you guys new of a place i could get bulk remington or hornady .308 ammo

  11. #20
    Here ya go. .308 is like dog poop, it's everywhere. Definitely my next rifle purchase.

    Cheaper Than Dirt - America's Ultimate Shooting Sports Discounter
    You can run... but you'll just die tired. 3%

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