close
Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Reloading

Reloading Berger Bullets

Reply

300RUM vs. 300WinMag

LinkBack Thread Tools Display Modes
  #8  
Unread 06-15-2009, 03:23 AM
Platinum Member
 
Join Date: Apr 2005
Location: Alaska
Posts: 4,695
Re: 300RUM vs. 300WinMag

You're getting more than 150 fps higher velocity than I get from my 300 Win Mag. I've got a 25.5" barrel. I think you've got a bad chronograph.

How long is your barrel and how many firings do you get from a case before you have to throw them away due to swollen primer pockets? How many other guys do you know getting those velocities from 300 Win Mags?

Last edited by phorwath; 06-15-2009 at 08:21 AM.
Reply With Quote
  •   #9  
    Unread 06-15-2009, 08:20 AM
    Gold Member
     
    Join Date: Jun 2006
    Location: Shangri-La
    Posts: 955
    Re: 300RUM vs. 300WinMag

    I reload for 9 different 300 win mags. Also have pushed that caliber hard to find the limits. In the fastest barrel I was only able to get 2980 fps with the 200 gr bullet and just over 3200 fps with the 180 gr.
    __________________
    If you can read this, thank a teacher.......if you are reading this in English, thank a soldier.
    Reply With Quote

      #10  
    Unread 06-15-2009, 01:08 PM
    Platinum Member
     
    Join Date: Dec 2001
    Location: Mukilteo, WA
    Posts: 1,092
    Re: 300RUM vs. 300WinMag

    Yeah, those are dead on. So there's your answer BigUglyMan of why people would burn so much more powder--because you have to in order to get those velocities. If you aren't needing to pound your bolt open with a hammer after each shot, I'd suggest trying a different chronograph. Maybe your co-worker with the slow 300 RUM would let you shoot over his?

    This all assumes, of course, your aren't using a 38" barrel or something.
    Reply With Quote
      #11  
    Unread 06-15-2009, 04:03 PM
    Platinum Member
     
    Join Date: Apr 2005
    Location: Alaska
    Posts: 4,695
    Re: 300RUM vs. 300WinMag

    Quote:
    Originally Posted by woods View Post
    I reload for 9 different 300 win mags. Also have pushed that caliber hard to find the limits. In the fastest barrel I was only able to get 2980 fps with the 200 gr bullet and just over 3200 fps with the 180 gr.
    Hey - I feel better now. I was starting to feel like an overcautious weenie! I'm getting ~2970 fps with 210 Berger VLDs and IMR 7828 powder, using Lapua brass. I'm pushing them on the warm side in the Lapua brass.
    Reply With Quote
      #12  
    Unread 06-15-2009, 04:13 PM
    Platinum Member
     
    Join Date: Jul 2004
    Location: SW MO
    Posts: 1,317
    Re: 300RUM vs. 300WinMag

    3150 fps with a 200 gr bullet out of the 300 WM? Dude!
    I pushed it up to 3000 fps out of a 24" barrel but backed off due to flattened primers and extractor marks on case head, and not to mention stout recoil. I think out of a 24-26" barrel, 2900-2950 ifps s all you can expect out that bullet weight. That in itself is certainly nothing to sneeze at.
    I'm currently running a 300 RUM 3200 fps with the 200 gr Accubond and I consider that max out of my 26" barrel. Accuracy is outstanding and that rifle is my go to for long range elk. I wouldn't hesitate to take a 300 WM, however. Build which ever one tickles your fancy and go kill some elk!
    __________________
    The critters have to win every time, I only have to win once.

    NRA Life Member
    Reply With Quote
      #13  
    Unread 06-15-2009, 05:09 PM
    Platinum Member
     
    Join Date: May 2008
    Location: South of Canada and North of Wyoming
    Posts: 6,068
    Re: 300RUM vs. 300WinMag

    Quote:
    Quote:
    Originally Posted by bigbuTT View Post
    Hi,

    what are the differences between 300RUM and 300WinMag?
    Are there siginficant differences? What would you prefer for a Long Range Rifle?

    bigbuTT
    I think you will find on average that the RUM will give you 200-250 fps more vleocity than the WM. That will give you about 150 yds more "effective" range.

    As for accuracy, I think that will be more dependant on the rifle and powder/bullet combination, not the cartridge.

    -MR
    Reply With Quote
      #14  
    Unread 06-21-2009, 12:33 AM
    Bronze Member
     
    Join Date: Sep 2008
    Location: Behchoko, NT
    Posts: 50
    Re: 300RUM vs. 300WinMag

    Quote:
    Originally Posted by phorwath View Post
    You're getting more than 150 fps higher velocity than I get from my 300 Win Mag. I've got a 25.5" barrel. I think you've got a bad chronograph.How long is your barrel and how many firings do you get from a case before you have to throw them away due to swollen primer pockets? How many other guys do you know getting those velocities from 300 Win Mags?
    I forgot to mention, I'm running a 29" barrel and not exceeding any max loads. it's got a fairly tight chamber. The rifle's fairly new so I haven't shot it enough to see how many firings I get. I know 3 guys that had 300 WM rifles built by the same smith (well 2 plus the smith himself) that are getting comparable velocities. FWIW they seem to be getting inordinately fast results with other rifles built by the same guy. Dunno why but his rifles seem to shoot fast.
    Reply With Quote
    Reply

    Bookmarks

    Thread Tools
    Display Modes


    Similar Threads for: 300RUM vs. 300WinMag
    Thread Thread Starter Forum Replies Last Post
    Economics- .308 vs .300WinMag JAMMAN Reloading 13 10-23-2011 09:33 AM
    Advice on building 300WinMag??? BigDaddyKane Long Range Hunting & Shooting 17 03-13-2011 08:21 AM
    .300winmag. to .300rum? bednhm Long Range Hunting & Shooting 3 01-31-2010 11:36 PM
    What is the Range of the 300WinMag? TacticalHits The Basics, Starting Out 15 03-22-2008 06:33 AM
    sendero 300winmag vjpascale The Basics, Starting Out 19 09-24-2003 10:51 AM


    All times are GMT -5. The time now is 11:27 PM.


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