Quantcast
  1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

.223 68 gr. HP/BT and IMR 4198

Discussion in 'Handloading and Reloading' started by Grampa, Sep 9, 2003.

Thread Status:
Not open for further replies.
  1. Grampa

    Grampa Member

    Joined:
    Jan 2, 2003
    Messages:
    159
    Location:
    Juneau
    I've just started loading for .223 Remington, and have a few pounds of IMR 4198 in the reloading cabinet. I found some load information for 55 gr. bullets, but nothing that shows IMR 4198 being used for 68 gr. bullets. (And, I've looked in five reloading manuals, searched the web, and searched a few newsgroups...) Is this powder too fast for a 68 gr. bullet load?

    It looks as if H335 and magnum primers are necessary for 68 gr. bullets?

    My rifle has a 20" 1 in 9" barrel, for load comparisons.

    Thanks!
     
  2. Poodleshooter

    Poodleshooter Member

    Joined:
    Dec 30, 2002
    Messages:
    1,237
    Location:
    Mr. Jefferson's country
    IMR4198 is an extremely fast rifle or extremely slow handgun powder if memory serves. Most powders for 68gr. bullets in the .223 are on the slower end of the burning rates used in that cartridge. Think of powders that burn well in the .308 Winchester for comparison. H335,BallC2,Win748,Varget,AA2230,AA2495,AA2520,& RL15 are some examples.
    I use a military pulldown Ball(C)2 equivalent which serves well.
    I'd imagine that 4198 would generate some high and unsafe pressures with 68gr bullets.
    I've never used magnum primers in my .223, but I suppose opinion differs on that topic.
    Hopefully some highpower reloaders will chime in with their opinions,too.
     
  3. SodaPop

    SodaPop member

    Joined:
    Dec 22, 2002
    Messages:
    1,430
    Location:
    Pennsylvania
    Use what you got, but I strongly suggest trying the Sierra 69gr HPBT for a 1-9 twist.

    I use 24.5gr of AA2230 with the Sierra bullet and its great for accuracy and long range shooting.
     
  4. Sam Adams

    Sam Adams Member

    Joined:
    Jan 28, 2003
    Messages:
    2,035
    Location:
    South Texas
    Soda Pop

    I've got a 1 in 9 twist, 20 inch barrel, and I've found that the 52grain SMKs are more accurate than the 69s. I also have a couple of friends that have the same experience, and one told me that the 69s need a 1 in 7 or 8 twist to reach their potential. What, if any, is your experience?

    Also, what kind of accuracy do you get with your 69 gr load, and what kind of rifle are you using with it?

    Thanks
     
  5. Steve Smith

    Steve Smith Moderator Emeritus

    Joined:
    Dec 21, 2002
    Messages:
    4,394
    Location:
    Southeastern US
    You should be able to use 69s fine in a 1:9 barrel. The 52s are more accurate, but distance and wind gives heavier bullets the nod.
     
  6. SodaPop

    SodaPop member

    Joined:
    Dec 22, 2002
    Messages:
    1,430
    Location:
    Pennsylvania
    1 MOA with a Mini 14 out to 400yds.
     
Thread Status:
Not open for further replies.

Share This Page