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Thread: Your rifles zero

  1. #1

    Default Your rifles zero

    I use a 200 yard zero for my scoped bolt action center fire rifles. We use the 30-06 and the .338 Win. Mag. At 100 yards the group centers about 1.5 to 2" high, dead on at 200 yards, about 5" low at 300 yards and close to 2 feet low at 400 yards. Our reason is we do not do much shooting at big game past 200 yards and I want the bullet to land as close as possible to where the cross hairs are placed. I know all about the "maximum point blank" range theory for a given load. I still prefer to zero a rifle for the distance the majority of our shots are taken. This is the zero I want for hunting big game in Alaska with a scoped center fire rifle. At what range do you zero your scoped center fire rifle when hunting big game in Alaska?

  2. #2
    Member svehunter's Avatar
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    100 yards 2" high

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    Member RMiller's Avatar
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    I like to use 2" high at 100 yards.

    That puts me 2" high at 200 and -3" at 300 and -14 at 400.

    Which is plenty flat cause I hardly shoot over 100 yards anyway.

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    Same here. 2 inches high at 100.
    Tennessee

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    Depends on which rifle/cartridge/bullet weight combination I plan on using. I can sight my 257 STW with 100 grain Barnes TSX to be 1.5" high at 100 yards and never take it off hair all the way out to 600 yards. On the other hand the 500 S&W with 500 grain flat points are sighted dead on at 100 yards. The 300 RUM with 150 grain Swift Sciroccos is sighted in at 1.75 inches high at 100 yards and then I use the Ballistic Plex Reticle out to 500 yards. These are just examples of some of the bullet weights I am using in some of the cartridges I shoot.


    If I load different bullet weights in each cartridge I have to start all over agin.

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    Member shphtr's Avatar
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    Depends on the external ballistics for the particular cartridge, weight of the bullet, length of barrel, and particular powder charge. 1.5" to 3" will prob cover 95% + of rifles commonly used for big game hunting in Alaska.

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    Quote Originally Posted by RMiller View Post
    I like to use 2" high at 100 yards.

    That puts me 2" high at 200 and -3" at 300 and -14 at 400.

    Which is plenty flat cause I hardly shoot over 100 yards anyway.
    This is what works for me as well.
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    Member akpredator's Avatar
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    Just like allen said it all depends on the cartridge, caliber, and bullet weight. just becouse you have your rifle zeroed at 200 dosent make every bullet hit 2" high at 100.

    todd
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    1.5-2" high at 100. Then I go out to Birchwood and shoot at the 200 and 300 yard ranges to find out for sure where its going to print at those ranges.

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    I decide based on the capability of the rifle. For the 375 I zero @ 200 making it good to 300. The 257wby and 300 ultra with very similar trajectories I zero @ 300 making them good to 400 with very little compensation. Highest arc point is at about 200 at about 2.5" high, 7 low at 400.

    Allen, Don't know what kind of rocket fuel you're runnin in that 257. Even at 4000fps and 1.7 high at 100 you will be over 32" low at 600 yards.

  11. #11

    Default For my .338

    About 2 inches high at 100 yards with 225 grain A Frames, to be dead on at 200 yards.

    Michael

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    Moderator Daveinthebush's Avatar
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    Default Once

    Once I sight in I use the RemShoot program and adjust it to match where I am hitting at 100 and 200 yards and print out the trajectory numbers. I then use MS Word and type the trajectory in 50 yard increments to 500 yards. Print it and tape it to the bell of the scope.
    That way I don't have to remember the farther numbers in the field.

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  13. #13

    Smile Sighting IN

    I sight my .338 Win. Mag. in zero at 150 yds. Then check my above 100 yd zero by shooting at 100 yds. Same thing at 200 and 250 yds to find bullet drop.
    Same with my .416 Taylor sight it in at 150 yds. and then check where the bullet strikes at other ranges. You will be suprised, all guns ain't the same and ballistics are only a fleeting guess.

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    Member 8x57 Mauser's Avatar
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    Question Huh?

    Quote Originally Posted by RMiller View Post
    I like to use 2" high at 100 yards.

    That puts me 2" high at 200 and -3" at 300 and -14 at 400.

    Which is plenty flat cause I hardly shoot over 100 yards anyway.
    RMiller,

    You and AK257 both said this, but I'm having a dim moment. If you're 2" high at 100, how can you also be 2" high at 200? I suppose if the bullet's highest point were around 165 yards that might make sense, but an arc like that isn't likely to get you a mere -3" at 300, is it?

    A little more insight would help me understand. How fast are you throwing those rocks?

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    Quote Originally Posted by Ed M View Post

    Allen, Don't know what kind of rocket fuel you're runnin in that 257. Even at 4000fps and 1.7 high at 100 you will be over 32" low at 600 yards.

    This barrel is on my Encore. It is a 27" Virgin Valley barrel with a Leupold 4.5X14X40 LR scope with a standard Long Range Estimating Duplex reticle. With this LR Reticle you crank up the power ring on the scope until you are bracketing the animal with the horizontal stadia and the bottom post. That will equal a 16" kill zone. Or you can bracket the animal with the top and bottom post and that will equal a 32" kill zone. I use the horizontal stadia and the bottom post at 14 power. The 100 grain Barnes is starting out of the muzzle at 4226 FPS (4200 as the other 26 FPS doesn't add much too the equation)with a healty does of RL25. As I stated I never have to aim off hair.

  16. #16

    Default Ed...

    Quote Originally Posted by Ed M View Post
    I decide based on the capability of the rifle. For the 375 I zero @ 200 making it good to 300. The 257wby and 300 ultra with very similar trajectories I zero @ 300 making them good to 400 with very little compensation. Highest arc point is at about 200 at about 2.5" high, 7 low at 400.

    Allen, Don't know what kind of rocket fuel you're runnin in that 257. Even at 4000fps and 1.7 high at 100 you will be over 32" low at 600 yards.
    Ed, I think Al forgot to mention just how nice a cartridge that 257stw is. When I was thinking about making my 7stw into something bigger he suggested making it into something smaller. For some reason the 8mm mag parent case works so much better being anything other than the 8mm, go figure... I havent decided yet what I am going to do with my 7stw yet though. Just thought you would like to know what a 257stw is.

  17. #17
    Member alaska bush man's Avatar
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    Thumbs up 338 Win

    3" high @ 100 yards or dead on @ 200 yards.

    338 Win with 225 TSX.
    Alaska

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    Quote Originally Posted by 8x57 Mauser View Post
    RMiller,

    You and AK257 both said this, but I'm having a dim moment. If you're 2" high at 100, how can you also be 2" high at 200? I suppose if the bullet's highest point were around 165 yards that might make sense, but an arc like that isn't likely to get you a mere -3" at 300, is it?

    A little more insight would help me understand. How fast are you throwing those rocks?
    I should have read a little closer. For me it's 2" (up to about 2.5" or so) at 100 will put me right on at 200.
    The Marines I have seen around the world have the cleanest bodies, the filthiest minds, the highest morale, and the lowest morals of any group of animals I have ever seen. Thank God for the United States Marine Corps! (Eleanor Roosevelt, 1945)

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