7.62 Caliber Questions

Discussion in 'The Ammo & Reloading Forum' started by Josh Smith, Dec 15, 2011.

  1. Josh Smith

    Josh Smith Member

    Joined:
    Nov 10, 2009
    Messages:
    69
    Location:
    Wabash IN
    Hello,

    I've been wondering what the wound channel from a 7.62x54R FMJ 147 grain bullet looks like. I bought a bunch of pulled bullets a while back for plinking and target shooting, but it seems to me the base would turn forward.

    These do not have air gaps in the noses.

    Though I keep soft point around for critters, I do wonder how they'd drop with the FMJ running 2500 to 3000 feet per second. (I normally load 45 grains Varget for fun, but 47.2 grains will run pretty doggone fast.)

    Are the lethality and immediate incapacitation effects really that much less on FMJ rifle bullets?

    How about if the nose were ground down a bit, not enough to expose the lead, but enough to, say, create a small meplat?

    My second question concerns accuracy and precision: With handloads, I can get these bullets into under 1" to 2.5" at 80 yards, depending on the day and how I'm doing. This is on par with what I can do with open sights and the soft points (which are Hornady, by the way).

    With open sights, do you believe it would be worth grabbing up a box of Match King or whatever I can find, or are open, or am I at the design limit of open, iron military sights? The front post is down from about 0.080" to 0.060" and tapered, but I'm not sure how much difference that makes. I know I like it better.

    So... any help on these two questions would be appreciated!

    Thanks,

    Josh
  2. jack404

    jack404 Former Guest

    Joined:
    Jan 11, 2010
    Messages:
    17,592
    Location:
    Australia
    wound channel at 400 is huge .. it'll stop anything , man elephant , kombi , pretty much anything mobile it'll stop

    as for accuracy heres a pic with issue ammo at 100 meters at a mil rifle comp

    10 rounds in 30 seconds i think i took 25 to get this , and no i'm not always this good but it shows whats possible on a good day , i have 5" groups ( 5 round) at 600 meters as well but a awful long time ago



    rifle was a Australian army issue L1A1 SSAA is Sporting Shooters Association of Australia the sig is the SSAA prez..

    [​IMG]
    Last edited: Dec 15, 2011
  3. JLA

    JLA Well-Known Member

    Joined:
    Feb 26, 2007
    Messages:
    18,271
    Location:
    Heart Of Texas
    only problem with FMJ is it doesnt expand. Sometimes thats a desirable thing and sometimes it isnt. When hunting you want controlled expansion and deep penetration, when target shooting it doesnt matter.

    High power rifle rounds ALL generate a kinetic wound channel, also known as temporary cavitation, and the higher the velocitym the greater the effect. It is the impact energy imparted to the soft tissue causing it to expand violently and rapidly. This is what breaks surrounding bones and rips surrounding flesh. If you put a 147 gr FMJ into a deers chest cavity at 2800 fps that impact cavitation channel is going to destroy its heart. it might run but it wont go far.

    And to the second question.. Dont waste your money on match bullets if youre putting 2.5MOA on paper with the irons. especially with post and notch sights. youre doing alright.. Keep it up. :thumbsup:
  4. JLA

    JLA Well-Known Member

    Joined:
    Feb 26, 2007
    Messages:
    18,271
    Location:
    Heart Of Texas
    nice shootn Jack.
  5. jack404

    jack404 Former Guest

    Joined:
    Jan 11, 2010
    Messages:
    17,592
    Location:
    Australia
    wish i could do it like that today , average now is 1.6 " at 100

    hate getting old , and miss my SLR ( L1A1)

    I've a scoped ishapore in 7.62 NATO that i get 6" groups at 600 still with mil ammo

    and my AIA B10 ( LE clone made in OZ) that'll do the same with mill issue , but you do get flyers with mill issue ammo
    Last edited: Dec 15, 2011
  6. JLA

    JLA Well-Known Member

    Joined:
    Feb 26, 2007
    Messages:
    18,271
    Location:
    Heart Of Texas
    yeah but you can get flyers with just about anything.
  7. gun-nut

    gun-nut Member

    Joined:
    Jan 15, 2011
    Messages:
    980
    Location:
    ohio
    Just a thing you could try and my grandfather told me. Use old phone books or newspaper and pack it tight in a wood frame,(keep the face open to the books) and then wet it down or leave in the rain for a few days, then shoot at it. Make it about 2-3 feet thick. you can recover the bullet and see what the wound chanel will look like. It does work i have tried it. Its the next best thing to having balistics jell. Just ask people to save there books or papers its free and fun. Its nasty even with a FMJ!!!
  8. JLA

    JLA Well-Known Member

    Joined:
    Feb 26, 2007
    Messages:
    18,271
    Location:
    Heart Of Texas
    Yep. Wet phone books work great as expansion media. I stack mine about 2 foot thick and wrap them with 100 MPH tape. Then just put em in a tub of water for a couple days.
  9. Grizz

    Grizz Active Member

    Joined:
    Dec 18, 2011
    Messages:
    967
    Location:
    Colorado Rocky Mountains
    The other day I put 2 crushed cans on their side so I could see the tops from 85 yards. I got 4/5 hits with my mosin nagant using iron sights. I'm still trying to get better accuracy at 500 yards, so far i've been able to hit a man size target 4 out of 10 times using iron sights at 500 yards.
Similar Threads
Forum Title Date
The Ammo & Reloading Forum What Caliber-Please Help:) Apr 5, 2014
The Ammo & Reloading Forum One Book/One Caliber for 223 Error Mar 3, 2014
The Ammo & Reloading Forum 7$ lyman big bore caliber mini manual? Jan 23, 2014
The Ammo & Reloading Forum Caliber change for my SDB Oct 12, 2013
The Ammo & Reloading Forum powder measures for each caliber? Sep 23, 2013

Share This Page