close
Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Hunting > Long Range Hunting & Shooting

Long Range Hunting & Shooting Nightforce Optics

Reply

300gn 338 SMK G7 and g1 bc info

LinkBack Thread Tools Display Modes
  #1  
Unread 07-19-2011, 09:56 AM
Silver Member
 
Join Date: Oct 2008
Location: New York, NY
Posts: 272
300gn 338 SMK G7 and g1 bc info

anyone have a good g7 and g1 info for the 300 Match king. i have brian litz's book but not on me and the smk doesn't have a g7 bc in bullet flight. i am shooting a 338 Edge at 2800 and figured the g7 drag model will likely be better for longer shots.
any other help or recommendations welcome.
thanks
don
Reply With Quote
  •   #2  
    Unread 07-21-2011, 11:09 AM
    Silver Member
     
    Join Date: Oct 2008
    Location: New York, NY
    Posts: 272
    Re: 300gn 338 SMK G7 and g1 bc info

    Anyone?
    d
    Reply With Quote

      #3  
    Unread 07-21-2011, 06:58 PM
    Gold Member
     
    Join Date: Jul 2008
    Location: Base of the Bluemountains aka Gods Country
    Posts: 528
    Re: 300gn 338 SMK G7 and g1 bc info

    i would love to know as well
    Reply With Quote
      #4  
    Unread 07-21-2011, 08:28 PM
    Silver Member
     
    Join Date: Dec 2008
    Location: Fernie BC, Canada
    Posts: 190
    Re: 300gn 338 SMK G7 and g1 bc info

    0.381 G7 from Litz's first book. I only tried 100 of them from my edge, then I switched to the bergers. I am not sure which variable(s) was out when I ran JBM, but I ran 0.375 G7 to get my drops to match up.
    Reply With Quote
      #5  
    Unread 07-21-2011, 09:01 PM
    Gold Member
     
    Join Date: Jul 2006
    Location: AB, Canada
    Posts: 556
    Re: 300gn 338 SMK G7 and g1 bc info

    300SMK - G7 0.383
    and for G1 you have to use multiple BC to get the real data.

    On my 338edge running 300SMK at 2870fps (behind 300rum REM case and 93.5 H1000, 250CCI)
    and using Exbal i have shoot so many round up to 1980yards to match the field data.

    So here are G1 Ballistic Coefficient what is working for my setup(EXBAL).

    0.770 - 2600fps
    0.760 - 1720fps
    0.750 - 1190fps
    0.700 - 0 fps

    This are very close with Brian Litz data published for 300SMK on G1 value.
    __________________
    Thanks
    CJ
    My 338Edge
    Reply With Quote
      #6  
    Unread 07-24-2011, 09:35 PM
    Silver Member
     
    Join Date: Oct 2008
    Location: New York, NY
    Posts: 272
    Re: 300gn 338 SMK G7 and g1 bc info

    Thanks guys time for a new post even with these I can't get it all to line up unless I raise my velo 100 fps all the ballistic programs say x but I am mot getting there verifying at 650 where I am a minute high? Measuring vela on a ohler so am a bit shocked if it was off. At 650 only got 1.25 inches of vertical.
    D
    Reply With Quote
      #7  
    Unread 07-25-2011, 12:08 AM
    Gold Member
     
    Join Date: Jul 2006
    Location: AB, Canada
    Posts: 556
    Re: 300gn 338 SMK G7 and g1 bc info

    are you shooting over a valley or canyon?
    if yes this is way you are off.
    the wind can lift or lower your bullet.
    __________________
    Thanks
    CJ
    My 338Edge
    Reply With Quote
    Reply

    Bookmarks

    Thread Tools
    Display Modes


    Similar Threads for: 300gn 338 SMK G7 and g1 bc info
    Thread Thread Starter Forum Replies Last Post
    Berger 300gn Gen II Bullet Info SHRTSHTR Rifles, Bullets, Barrels & Ballistics 11 05-22-2011 01:39 PM
    Berger 300gn Hybrid Returns SHRTSHTR Rifles, Bullets, Barrels & Ballistics 3 04-24-2011 05:44 PM
    .338 300gn. Berger loads TAP Rifles, Bullets, Barrels & Ballistics 3 09-06-2010 04:27 PM
    300gn Scenar at 2700 yards Topshot Long Range Hunting & Shooting 69 06-19-2010 10:41 AM
    .338 300gn smk and moose? LeMay Rifles, Bullets, Barrels & Ballistics 7 09-26-2003 11:39 PM


    All times are GMT -5. The time now is 11:23 AM.


    Powered by vBulletin ©2000 - 2017, Jelsoft Enterprises Ltd.
    Content Management Powered by vBadvanced CMPS
    All content ©2010-2015 Long Range Hunting, LLC