Zeiss Rapid Z 800 & 1000 scopes for M1A .308 UPDATE

Discussion in 'Long Range Scopes and Other Optics' started by G-gear, Mar 1, 2010.

  1. G-gear

    G-gear Well-Known Member

    Messages:
    78
    Joined:
    Jan 27, 2008
    My Springfield M1A (M21) can group well under an inch with 168 SMKs, Lapua brass, CCI 34 primers, and 40.5 grs. of H4895.
    I haven't tried past 100 yards yet, but, since I've been looking at buying a Zeiss Conquest Rapid Z 800 or Z 1000 scope, the dope on their website has caused me to recently write the following:

    'Been doing some hunting for the best scope for my Springfield M1A (M21).

    Springfield Armory Rifles

    gun)

    ZEISS RAPID Z 1000 RETICLE vs. RAPID Z 800 RETICLE
    Both are around $925
    And both are 4.5-14x50
    http://www.zeiss.de/C1256BCF0020BE5F/Contents-Frame/E34E4125AA548D6685256BCF0061320D

    Note: Please enter your information into our Rapid-Z Calculator to ensure that you make the best possible reticle selection
    based on your caliber, bullet, hunting conditions and location.

    According to their calculator for the Rapid Z 1000 (designed for the .308 Match ammo):
    This IS the value for .308, Sierra 168-gr. MK (BC =.462),
    Velocity: 2,550 fps,
    Elevation: 4,500 ft. ASL
    Temp: 80 degrees F

    The Rapid Z 1000:
    With their calculator, and the scope power ring set to 11.8x (12 power):
    *Optimize Power for: Bar No. 10 - Distance 1,000.
    They say to zero dead-on at 500 yards with the Bar 5. (Bar 5 is the Center Crosshair.)
    Easier way: To zero Bar 5 @ 100-yards:
    On 11.8x (12 power): make bullet impact 11.87" high @ 100 yards (above Bar 5 - Center Crosshair).
    Then this will happen:
    At Bar 1, the bullet will impact at 139 yards - (and you can roughly zero at 139 yards with Bar 1, on 11.8x (12 power).
    (Bars 1 - 4 are above the center crosshair Bar 5.)
    Bar 2 = 218 yards
    Bar 3 = 313

    Bar 4 = 404
    Bar 5 = 500
    Bar 6 = 597
    Bar 7 = 695
    Bar 8 = 796
    Bar 9 = 897
    Bar 10 = 1,000 yards
    This is seemingly unbeatable.

    Now, with the Rapid Z 800:
    With the M1A, same load, they say to put the power ring at 7.45 power.
    *Optimize Power for: Bar No. 8 - Distance 800.
    Sight in at 1.77" high @ 100 yards for a 200 yard zero (Center Crosshairs - call it Bar 1).

    (All other Bars are below the center crosshairs - Bar 1.)
    Watch it fall into place:
    At Bar 2 (an unmarked bar), bullet will impact at 295 yards.
    Bar 4 = 395 yards
    Bar 5 = 495
    Bar 6 = 596
    Bar 7 = 698
    Bar 8 = 800 yards

    I know it's not a 1,000 yard reticle - but 'tis rather versatile anyway...

    :rolleyes: So, I'm deciding on which to choose.
    More field of view with the power ring set at 7.45x with the Z 800, than at 11.8x on the Z 1000.
    And they say the Z 800 is intended for other calibers; but, look what it does for the .308!


    But, if you definitely need it backed-off at the lowest 4.5 power also, then the Z 800 will work for both close-quarter, and long-range work.
    At 4.5 power, just use the center crosshairs for 0-300 yards - then for precision: Zoom to 7.45x for 200-800+yards.

    Q. What would the Z 1000 do at 4.5 power? - when it is set up for all ranges (100-1000) at 11.8 power?
    A. Dead-on at 500-yards ONLY - Center Crosshairs - Bar 5. (Bar 5 impacts 11.87" high @ 100 yards on 11.8x. -Would need to test point of impact of Bars 1-4 on 4.5x ).


    Maybe we can't have our convenient cake, and eat it too. :D

    So, for me, THE DECISION IS: [I][SIZE=5]Z 800 ![/SIZE]
    [/I]

    The Z 800 is more traditional and more useful under stress. Your short-range field of view (FOV) and accuracy (at 4.5 power) could mean everything.
    I'd stress more over the up-close and personal - than sweat the remaining 200 yards down range to the magic 1,000 marker.

    And, I could live with the Z 800 at 7.45x to be sure for 0-800+yards. -You know what it's gonna do on 4.5x and 7.45x before you ever mount the scope! -And, at 14x needed magnification, with the center crosshairs, the bullet will impact 1.77" high @ 100-yards, and will still be absolute bullseye at 200-yards!

    But, for a dedicated LR benchrest set-up - or if you don't mind having it at 11.8 power all of the time, the Z 1000 bullseyes scratches the 100 to 1,000-yard itch.

    G-gear
    [SIZE=3][COLOR=#551011]chris_59@q.com[/COLOR][/SIZE]

    You can check-out their reticles here:
    Zeiss Rapid Z 1000
    [COLOR=#551011]Zeiss | 4.5-14x50 AO MC Conquest Riflescope | 52 14 90 9973[/COLOR]

    Zeiss Rapid Z 800
    [B]Zeiss 4.5-14x50 800[/B]


    LRB 7x50 laser rangefinder binoculars
    [B]http://www.newcon-optik.com/lrb7x50.html[/B]

    Unbelievable?

    Almost. :)

    [B]http://www.newcon-optik.com/Specs/lrb7x50.pdf[/B]


     
    Last edited: Mar 21, 2010