Pre-64 Model 70 in 6.5-06 AI

Discussion in 'Gunsmithing' started by redneckclimbing, Nov 27, 2019.


Help Support Long Range Hunting by donating:


40, 35, or 30 deg shoulder?

This poll will close on Jun 27, 2020 at 11:18 PM.
  1. 40

    0 vote(s)
    0.0%
  2. 35

    0 vote(s)
    0.0%
  3. 30

    0 vote(s)
    0.0%
  1. Danny1788

    Danny1788 Well-Known Member

    Messages:
    664
    Joined:
    Sep 1, 2009
    Sounds like a 6.5-284 is what your after. I’ve built some on LA with longer freebore and they work great. No need to do all that brass work for nothing. Or a 6.5x55 Swede? All would work in a LA m70
     
    TX Badger likes this.
  2. Gord0

    Gord0 Well-Known Member

    Messages:
    738
    Joined:
    Jan 3, 2017
    6.5x55 ai with the correct throat length would be about exactly what you're looking for. Lapua brass is also cheap for it.
     
    Hand Skills likes this.
  3. redneckclimbing

    redneckclimbing Well-Known Member

    Messages:
    290
    Joined:
    Jan 24, 2012
    Thanks for the replies! I had actually forgotten about the 6.5x284. Does anyone have any experience with one in a LA model 70? How many would fit in the mag box?

    Looked at the 6.5x55 AI, could work but how would that Lapua brass handle about 62000 psi? Any experiences here?
     
  4. Gord0

    Gord0 Well-Known Member

    Messages:
    738
    Joined:
    Jan 3, 2017
    It would handle it the same way it handles it in every other cartridge, just fine. If you were running a weak action then I'd worry, but there's nothing weak about a pre 64 model 70!
     
    Alibiiv likes this.
  5. redneckclimbing

    redneckclimbing Well-Known Member

    Messages:
    290
    Joined:
    Jan 24, 2012
    Any personal experience with this Gord0? There is a big difference between 51-55k psi and 65k psi. I would hate to be loosing primer pockets after two firings? If you cut a case in half you will see a difference in the web designs of different cartridges. Not to mention you would still be giving up a fair amount of case capacity for no real reason.
    Some of you are correct, this won't be something that wows the world! But it will be fun, and that is part of it as well!
     
  6. FEENIX

    FEENIX Well-Known Member LRH Team Member

    Messages:
    12,682
    Joined:
    Dec 20, 2008
    There is something nostalgic about the 6.5x55 Swede, which has around longer than our venerable .30-06 . I have a Carl Gustaf M1894 carbine in 6.5x55 that I started both my boys hunting with at age 10.
     
  7. redneckclimbing

    redneckclimbing Well-Known Member

    Messages:
    290
    Joined:
    Jan 24, 2012
    Cliff,
    Would you still recommend one? Or would you go with a shallower shoulder?

    Also, would it be possible on your rifle (a standard LA) to use the H&H extractor ring to gain some bolt travel and therefore basically run a Sherman at it's full potential?
     
  8. redneckclimbing

    redneckclimbing Well-Known Member

    Messages:
    290
    Joined:
    Jan 24, 2012
    Danny, can you fit three or four in the mag box with the 6.5x284?
     
  9. CliffM

    CliffM Well-Known Member

    Messages:
    264
    Joined:
    Apr 22, 2008
    Had to look up the extractor ring, mine already has it. Rich has the reamer designed so the bullet seats right to the base of the neck. I am on my second barrel, wouln't change a thing.
     
    redneckclimbing likes this.
  10. Gord0

    Gord0 Well-Known Member

    Messages:
    738
    Joined:
    Jan 3, 2017
    I don't have any first hand experience with the 6.5x55 ai, but did research it quite a bit for a Mauser project I have sitting in the safe. The Lapua brass from the research I did doesn't have any issues. The European loads for standard 6.5x55 are quite hot to begin with.
     
  11. redneckclimbing

    redneckclimbing Well-Known Member

    Messages:
    290
    Joined:
    Jan 24, 2012
    Nice!
     
  12. redneckclimbing

    redneckclimbing Well-Known Member

    Messages:
    290
    Joined:
    Jan 24, 2012
    Cliff, what is the COAL of your rounds? And are you starting with .270 Win brass? If npt which brass are you starting with, and is it a single step to re-size, then just fire-form? What I'm asking is do you have to neck out the brass and then form a false shoulder such as with a Gibbs cartridge?
     
  13. CliffM

    CliffM Well-Known Member

    Messages:
    264
    Joined:
    Apr 22, 2008
    I can go as long as 3.420, but 3.385' seems to shoot real good with most loads.I use Norma .270win brass. One stroke to neck down and form the false shoulder. I have also used .280 brass, same process.
     
  14. redneckclimbing

    redneckclimbing Well-Known Member

    Messages:
    290
    Joined:
    Jan 24, 2012
    I think you guys are really selling me on the Sheman, that's a whole lot of performance in a pretty small package, and an extra round in the magazine never hurt anyone! Thanks for the info./advice!