close
Long Range Hunting Online Magazine


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

Reloading Berger Bullets

Reply

270 wildcat chambering

LinkBack Thread Tools Display Modes
  #1  
Unread 11-28-2009, 10:51 PM
Silver Member
 
Join Date: Oct 2008
Location: Bryan, Tx
Posts: 284
270 wildcat chambering

Getting ready to re-barrel a .270 win Browning a-bolt. Anybody try any interesting wildcat chamberings that can improve on the ballistics of this cartridge?
Reply With Quote
  •   #2  
    Unread 11-29-2009, 01:00 AM
    Silver Member
     
    Join Date: Mar 2007
    Posts: 430
    Re: 270 wildcat chambering

    The 270 is already overbore. What would you consider to be an improvement? Re-barreling to 280 would be an improvement because of the 9:1 twist. That reduces the effects of overbore by allowing heavier bullets which can improve long-range trajectory; however, I don't know if that is what you're looking for.

    BTW, is that a stainless A-Bolt?

    Last edited by Winchester 69; 11-29-2009 at 01:05 AM.
    Reply With Quote

      #3  
    Unread 11-29-2009, 07:42 AM
    Gold Member
     
    Join Date: Dec 2002
    Location: mathias wv
    Posts: 987
    Re: 270 wildcat chambering

    6.5/06 AI, 6.5 Gibbs, 280 AI, possibilities are endless.
    RR
    __________________
    Born to Hunt, Forced to Work!
    Reply With Quote
      #4  
    Unread 11-29-2009, 11:56 AM
    Silver Member
     
    Join Date: Oct 2008
    Location: Bryan, Tx
    Posts: 284
    Re: 270 wildcat chambering

    Thinking about the 280 AI. Seems like its not even much of a wildcat anymore though. Yes it is a stainless a-bolt. Why?
    Reply With Quote
      #5  
    Unread 11-29-2009, 03:27 PM
    Silver Member
     
    Join Date: Mar 2007
    Posts: 430
    Re: 270 wildcat chambering

    Quote:
    Originally Posted by nheninge View Post
    Yes, it is a stainless A-bolt. Why?
    The word on these rifles is that the threads in the action are removed with the barrel. You may want to find a gunsmith who will handle the job before going much farther.

    Many have the view that AI doesn't gain much unless the parent case is heavily tapered. I wouldn't bother with it on an '06 case.
    Reply With Quote
      #6  
    Unread 11-29-2009, 03:57 PM
    Gold Member
     
    Join Date: Oct 2006
    Posts: 642
    Re: 270 wildcat chambering

    I have found the 270 to be an excellent long range cartridge.

    I practice at the range with rifles in 6mmBR, .243Win, 257 Roberts AI, 260Rem, 6.5x55, 270, 7x57mm, 7mm Rem mag, 30-30, 303Sav, .308, 30-06, 300 Win Mag, 7.5 Swiss, 7.62x39mm, 303Brit, 7.62x54R, 8x57mm, 338WM, 10mm, 10.4mm, 44 magRifle , 45acpRifle 45Colt, and 45/70.

    But the 270 is the only one that kills the deer for me.
    Reply With Quote
      #7  
    Unread 11-29-2009, 07:42 PM
    Platinum Member
     
    Join Date: Jan 2004
    Location: Blackfoot, Idaho
    Posts: 8,841
    Re: 270 wildcat chambering

    Here's a weird suggestion.

    If the barrel sin't shot out,

    Go to the local Hobby Shop and buy a piece of brass tube. Take a 270 MT cartridge to select the size of tube which will will fit over the case neck.

    This will be your "drop tube". The load the 270 Win, starting without using the drop tube getting as much of IMR 7828ssc as you think is a good starting load for the 140 grain bullet you will use.

    Keep increasing powder, using the drop tube, until you get decent pressure and check the velocity. You may be surprised, in a pleasant way, with the potential of that powder in the winny. AGAIN, be careful........

    If the bbl is shot out, then a 270 WSM or 7mm WSM wouuld be nifty.
    Reply With Quote
    Reply

    Bookmarks

    Thread Tools
    Display Modes


    Similar Threads for: 270 wildcat chambering
    Thread Thread Starter Forum Replies Last Post
    chambering help fisherman98 Rifles, Bullets, Barrels & Ballistics 3 11-23-2010 08:11 AM
    B-78 chambering help elkaholic Gunsmithing 6 11-06-2009 09:22 PM
    Re chambering DONTSTROKEME Rifles, Bullets, Barrels & Ballistics 2 01-05-2007 11:06 AM
    7mm RM chambering help 11B2CV Reloading 9 12-12-2006 10:10 PM
    Which chambering? philip h The Basics, Starting Out 1 03-20-2005 10:11 PM


    All times are GMT -5. The time now is 12:04 AM.


    Powered by vBulletin ©2000 - 2016, Jelsoft Enterprises Ltd.
    Content Management Powered by vBadvanced CMPS
    All content ©2010-2015 Long Range Hunting, LLC