Do you load jhp under jacketed data?

Discussion in 'Ammunition & Reloading' started by springfield, Oct 22, 2011.

  1. springfield

    springfield New Member

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    I have always loaded fmj's but recently came across a great deal on jhp I just wanted to be sure what data to load under jacketed or something else
     
  2. fmj

    fmj Active Member

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    YES! JHP stands for JACKETED Hollow Points
     

  3. dunerunner

    dunerunner New Member

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    My reloading guide calls for different loads depending on bullet weight. I an a new reloader, and I may assume incorrectly; but I am guessing that bullet weight is the key. A 230 grain FMJ .45 APC loaded with the same grains of powder as a 230 grain JHP.

    Is this right or way wrong logic?
     
  4. lonyaeger

    lonyaeger New Member

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    Right!....
     
  5. JonM

    JonM Moderator

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    what can get ya in trouble is seating depth. hp ammo tends to have a longer length from base to ogive. some may seat deeper increasing pressure greatly. its always best to consult the bullet makers seating depth for the particular bullet your using. powder weights typical are the same.

    just my practice when dealing with hp bullets. i use one of these http://www.hornady.com/store/Lock-N-Load-OAL-Gauge-Straight-1Each/ along with one of hornady's comparators. they also have a curved version for stuff like lever guns. taking a measurement off the ogive is more accurate than oal off the point
     
    Last edited: Oct 22, 2011
  6. robocop10mm

    robocop10mm Lifetime Supporting Member Lifetime Supporter

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    If you will load the ammo at or near max OAL, the pressures should remain manageable
     
  7. fmj

    fmj Active Member

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    Yes, weight is a major key from what i can figure. I guess i should start mic'ing my bullets length. There again i try to follow the specs in my manual to the letter concerning weight, powder charges (very seldom coming close to max powder charges) and OAL.

    I typically use a bulk JHP bought at gun shows and not a specific manufacturer.
     
  8. JonM

    JonM Moderator

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    you can measure your bulk and flip through your manuals to find similar dimension bullets and use that load data. but staying well within published data for unknown but similar bullets will keep ya safe. long as your not shooting them out of a glock, they have a bad history of case ruptures due to unsupported chambers, most fullsize 45acp guns are pretty damn strong.

    1911s can handle quite a bit with a fully supported case. the 460 rowland is just a slightly longer 45acp seated a little deeper and nearly double the powder charge...