close
Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Rifles, Bullets, Barrels & Ballistics

Rifles, Bullets, Barrels & Ballistics Applied Ballistics

Reply

Twist rate for 220gr Sierra Matchking in 300 RUM

LinkBack Thread Tools Display Modes
  #8  
Unread 03-16-2005, 02:05 PM
Silver Member
 
Join Date: Jan 2005
Location: BUSH,ALASKA
Posts: 398
Re: Twist rate for 220gr Sierra Matchking in 300 RUM

[ QUOTE ]
I am not all that familiar with "Great" groupings at 200 yards plus. 1.5" groups at 200 yards doesn't "appear" all that great on paper. Forgive my ignorance, but what is the minimum group size to be considered "great" at 200 yards - I am quite new to the sport of long range shooting [img]/ubbthreads/images/graemlins/tongue.gif[/img]

[/ QUOTE ] Any stock rifle that will shoot into 1.5" @ 200 yards is doing vary well indeed! Only on the internet do we read of better from an off the shelf rifle!
__________________
"A HUNTER SHOULD LIVE OFF HIS GUNS" JOHN TAYLOR
Reply With Quote
  •   #9  
    Unread 03-16-2005, 02:13 PM
    Silver Member
     
    Join Date: Mar 2005
    Location: Sask, Canada
    Posts: 147
    Re: Twist rate for 220gr Sierra Matchking in 300 RUM

    And here I was thinking that my rifle had a problem! [img]/ubbthreads/images/graemlins/smile.gif[/img] The only work that I have had done is the action bedded with Marine-Tex, and a trigger adjustment - we all know how bad Remingtons factory triggers are [img]/ubbthreads/images/graemlins/frown.gif[/img] I use a Ken Ferrall 20 MOA base - also bedded with Marine-Tex - with a Elite 3200 10x Tactical scope and Burris Signature series rings.

    Thanks for all the great info guys!!
    Reply With Quote

      #10  
    Unread 03-17-2005, 02:12 AM
    Silver Member
     
    Join Date: Jan 2005
    Location: BUSH,ALASKA
    Posts: 398
    Re: Twist rate for 220gr Sierra Matchking in 300 RUM

    Man I wish I could shoot that well at 200 yards with a 10x scope. But time has not treated my eyes that kindly. When I test anything anymore I screw on a 36X scope to find out what the load and rig is capable of. If I can't see my bullet holes, then I can't steer! [img]/ubbthreads/images/graemlins/wink.gif[/img]
    __________________
    "A HUNTER SHOULD LIVE OFF HIS GUNS" JOHN TAYLOR
    Reply With Quote
      #11  
    Unread 03-17-2005, 01:37 PM
    Platinum Member
     
    Join Date: Jun 2001
    Location: Palmer, Alaska
    Posts: 2,539
    Re: Twist rate for 220gr Sierra Matchking in 300 RUM

    My suggestion is to try the 200 gr. Accubond at 90 gr. Retumbo and work up. My best load. These shoot very well in the Ultra's and better than the Sierra's in mine. I've yet to try the 240 SMK, but it will stabilize in the 10 twist 700 bbl.
    __________________
    Brent Moffitt
    Reply With Quote
      #12  
    Unread 03-17-2005, 02:39 PM
    Silver Member
     
    Join Date: Mar 2005
    Location: Sask, Canada
    Posts: 147
    Re: Twist rate for 220gr Sierra Matchking in 300 RUM

    Thanks for the tip Brent. I was thinking of trying out the 200 gr SMK. I have had good luck with all of sierras bullets so far.

    3sixbits:
    Yes, I also prefer the larger magnification. But unfortunately, I don't have have any higher magnification scopes that will take the 300 RUMs poundings [img]/ubbthreads/images/graemlins/crazy.gif[/img]
    Reply With Quote
      #13  
    Unread 03-20-2005, 08:12 AM
    Gold Member
     
    Join Date: Sep 2002
    Location: Illinois
    Posts: 837
    Re: Twist rate for 220gr Sierra Matchking in 300 RUM

    Anyone know what the bc for the AccuBond bullet is. Shoot them past 800 yds?
    db
    Reply With Quote
      #14  
    Unread 03-20-2005, 05:32 PM
    Platinum Member
     
    Join Date: Jun 2001
    Location: Palmer, Alaska
    Posts: 2,539
    Re: Twist rate for 220gr Sierra Matchking in 300 RUM

    Temp 33 deg F, BP 29.38, Station Pressure (SP) 29.32, 50ft ASL.

    MV and PSI was tested with the Oehler M43, and downrange MV was over the Oehler M35P.


    200gr Accubond, H50BMG, 210M, OAL 3.765", on lands.

    Charge, MV (@11 ft), PSI, Downrange MV (298 yards), BC (Calculated from velocity lost)


    100gr = 3236 @ 68,900 --- Sighter off to the side
    100gr = 3197 @ 66,000 --- 2658 --- .559

    102gr = 3259 @ 68,600 --- Wind blew the shot 3" off, no reading.
    102gr = 3276 @ 70,900 --- 2741 --- .575

    104gr = 3317 @ 73,500 --- 2782 --- .581
    104gr = 3335 @ 75,800 --- 2796 --- .579


    210gr JLK, Retumbo, 210M, OAL 3.828", .005" into lands.

    90gr = 3170 @ 69,600 --- Sighter off to the side.
    90gr = 3173 @ 69,600 --- 2719 --- .660
    90gr = 3155 @ 68,900 --- wind again
    90gr = 3165 @ 69,600 --- love that wind, had to hold off to keep them over the chrono now.
    90gr = 3146 @ 67,600 --- 2708 --- .680
    90gr = 3151 @ 68,000 --- 2702 --- .663
    90gr = 3155 @ 68,600 --- 2705 --- .663
    90gr = 3157 @ 67,600 --- 2708 --- .664

    BC is corrected to standard conditions at sea level.
    __________________
    Brent Moffitt
    Reply With Quote
    Reply

    Bookmarks

    Thread Tools
    Display Modes


    Similar Threads for: Twist rate for 220gr Sierra Matchking in 300 RUM
    Thread Thread Starter Forum Replies Last Post
    Sierra 175 or 180 MatchKing 6mm Rifles, Bullets, Barrels & Ballistics 3 12-07-2008 08:11 PM
    180 Grain Sierra Matchking In .308 1 In 10" Or 1 In 12" Twist? billt Reloading 1 07-08-2008 04:35 PM
    Twist rate for 220gr Sierra Matchking in 300 RUM Alucard Long Range Hunting & Shooting 0 03-15-2005 08:40 PM
    300 Ultra 220gr SMK data with RL25 and Retumbo from Sierra Brent Rifles, Bullets, Barrels & Ballistics 8 05-13-2003 10:44 AM
    .338 250 Sierra MatchKing?? Sheldon Rifles, Bullets, Barrels & Ballistics 3 02-23-2003 01:39 AM


    All times are GMT -5. The time now is 08:38 PM.


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