If your .22 magnum is zeroed in at 30 yards?

Discussion in '.22-Rimfire Forum' started by jstgsn, Jun 6, 2012.

  1. jstgsn

    jstgsn Well-Known Member

    Joined:
    Nov 1, 2009
    Messages:
    1,745
    Location:
    Milford, Delaware
    Can any one estimate where it will be at 40 to 70 yards? Shooting a Marlin .22 mag rifle, Hornady .22 magnum 30 grain bullet, temp is 70 degrees, rifle is micro grooved, and at 30 yards it is dead on, ie .25 inch circle. Only looking for a guesstimate of what it will do at 50 yards, out to 70 yards. Using a 9 power scope. I'm not looking for exacts, just a "it should be" estimate.
    Next weekend I should be able to go to the range, but tomorrow my farmer friend has complained of a wood chuck problem and I was hoping to get out there. Figure I have a good spot to hide between 40 - 70 yards from where the varmit is coming out, and tonight was able to zero in at 30 yards.
    thanks
    fred
  2. 3/2 STA SS

    3/2 STA SS Active Member

    Joined:
    Aug 9, 2010
    Messages:
    1,579
    Location:
    Tampa Bay Area, FL
    I believe it will be higher as the bullet rises. Just place the cross hairs a bit lower then you don't have to mess around trying to chase the round. Good hunting!!
    Last edited: Jun 6, 2012
  3. Sandman

    Sandman New Member

    Joined:
    Jun 17, 2009
    Messages:
    559
    Location:
    Louisiana
    Mine is zeroed at 25 yds, about 1/2" high at 50yds, and about 1-1/2 high at 100 yds. shooting a 40 gr. CCI.
  4. jack404

    jack404 Former Guest

    Joined:
    Jan 11, 2010
    Messages:
    17,607
    Location:
    Australia
    on CCI .22 wmr its a fraction shy of a inch .989 at 75 Yards

    dunno for hornandy , i dont buy it ..
  5. carver

    carver Moderator

    Joined:
    Jul 28, 2008
    Messages:
    15,052
    Location:
    DAV, Deep in the Pineywoods of East Texas, just we
    .22 WMR (40 HP at 1910fps) Ballistic Coefficient .100, @ 100yds +0.5" @ 200yds -19.0" Mid-Range Trajectory1.5"@65yds. Maximum Point Blank Range 123yds.
  6. Curlyjoe_99

    Curlyjoe_99 Member

    Joined:
    Jan 5, 2012
    Messages:
    131
    Location:
    Texas
    ok did my let fly for you. some numbers are approximate

    .22 WMR (30gr at 1910fps- check your box data) Ballistic Coefficient .100, zeroed at 30yds, sights above bore at 1" (it matters- if yours defferent you will be high or low) 70 deg at sea level.

    @ 50yds, 0.10 rise
    @ 60yds, 0.05 drop
    @ 70yds, 0.39 drop
    @ 80yds, 0.86 drop
    @ 90yds, 1.50 drop
    @ 100yds, 2.34 drop

    straight shooting to you

    dang! just realized that i'm a day late- bygones
    Last edited: Jun 8, 2012
  7. Hammerslagger

    Hammerslagger New Member

    Joined:
    Jul 30, 2009
    Messages:
    1,097
    The answer to your question is mainly dependent upon you sighting system. That is to say do you have low mounted open iron sights that has the top of the front sight about 0.5" above the center of the bore; or do you have a big scope mounted on the rifle with an optical axis that is over 2.0" above the center-line of the bore.

    For a real life example, a .22 LR target pistol equipped with a 1" tube diameter red-dot sight will typically have its optical axis about 1.45" above the bore center-line and shoot to the same point of impact between 50' and 50 yards with target ammo. The same pistol set up for a "6 O'clock Hold" in US Bullseye shooting using iron sights, will print 1.5" high at 50', 2.75" high at 25 yards (or 1.25" higher), and 4.0" high at 50 yards {or 2.5" & 1.25" higher than 50' and 25 yards, respectively}.

    The foregoing probably does not help a lot other than to demonstrate that you need to actually check your rifle, sight system, and ammo at various ranges that you will shoot at. There are some tables for some arms, ammo , and sight axis distance above bore center-line published by some ammo manufacturers and the military. You might try searching the Internet.
Similar Threads
Forum Title Date
.22-Rimfire Forum 17 Winchester super magnum Apr 13, 2014
.22-Rimfire Forum Ruger American Rimfire 22 magnum accuracy Apr 1, 2014
.22-Rimfire Forum Dug An Old Friend Deep Out Of The Safe Today! My 22 Magnum Oct 26, 2013
.22-Rimfire Forum Been Thinking About This Ruger American Rifle In 22 Magnum With The 9 Shot Rotory Mag Oct 6, 2013
.22-Rimfire Forum Magnum Research Custom Ruger 10/22 WMR Apr 27, 2013