GUN RN vs. FN reloading data

Discussion in 'On Topic' started by Hibidi-Shibidi, Dec 11, 2009.

  1. Hibidi-Shibidi

    Hibidi-Shibidi New Member

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    Well, I fucked up and bought 250 Berry's Round Nose and 250 Berry's Flat Nose.

    The machine is set up OAL for the RN and I can't seem to find a recipe for the flat nose. Can someone help me out in a pinch here?

    Thanks.
     
  2. Hibidi-Shibidi

    Hibidi-Shibidi New Member

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    God damnit I'm having a stupid day.

    9mm
    124 gr
     
  3. Hibidi-Shibidi

    Hibidi-Shibidi New Member

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    Win231/HP-38 powder.
     
    Last edited: Dec 11, 2009
  4. Is there no information on the powder manufacturer's website for a load with a similar bullet?
     
  5. Keesh

    Keesh New Member

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    It's probably going to depend on what you're shooting it through. I know some guns have problems with the Berry's flat nose/HPs. I'd load up a few at various lengths and see if you have feeding problems.
     
  6. Hibidi-Shibidi

    Hibidi-Shibidi New Member

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    What would be the Min OAL on that though?
     
  7. Keesh

    Keesh New Member

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    Hit a round nose with the calipers, then a flat nose, subtract the difference from the minimum over-all case length of the round nose you have listed :dunno:

    I'd give ya a number but my manuals don't' list that bullet.
     
  8. Hibidi-Shibidi

    Hibidi-Shibidi New Member

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    That's what I was going to do if I couldn't find anything.
     
  9. Hibidi-Shibidi

    Hibidi-Shibidi New Member

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    For anyone that cares, I called Berry's and talked to a guy named Bud Watson. Seems like a bad ass old man and shot the shit with me for about 10 minutes on the phone.

    He said that him and many others have been starting with the following:

    124 gr Berry's Plated flat nose
    4.0 gr Win231/HP-38
    1.05 - 1.075 OAL


    I'm still going to put the calipers to a round nose and a flat nose but my mind can't seem to grasp how deep each will sit in the case at the moment.
     
  10. johnson

    johnson New Member

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    So you didnt want the Montana Gold?
     
  11. Hibidi-Shibidi

    Hibidi-Shibidi New Member

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    I had these prior to you bringing up the MG.

    Did you order them thinking I was in on the buy?
     
  12. NEp8ntballer

    NEp8ntballer New Member

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    1. measure round nose in loaded case
    2. measure case by itself
    3. measure round nose by itself
    4. do math
     
  13. yar1182

    yar1182 New Member

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    OAL is really mostly a starting point or reference. While it may have some bearing on feeding from magazines or up the feed ramp into the chamber, it is really more about pressure.

    A flat point, round nose, or wad cutter may all have much different OAL because of their shape. what is more of a concern is how deep they are seated which affect case volume/pressure. thus do not go off a measurement of what OAL a round nose bullet is.

    For example a round nose 9mm generally are around 1.150. A wad cutter or flat point will be shorter. If you go too short you can have over pressure of course. Best to error on the long side than loading shorties.

    You have to shoot your ammo and check the fired cases for signs of over pressure. Such as primer flow, flattened primers, or flattened head stamps. Of course if your gun blows up, case blows out, etc that means it's over pressured too :). You'll also want to chronograph you ammo so you have some reference point for dope charts, and load data. For example you can compare what your FPS for a partical load vrs what the published fps says you should expect. Much of the load data your getting might be out of 5" convential rifled barrels and it's actually 80 fps slower in your 4" polygonal barrel, etc. This is good to know so you can look for patterns so you can make educated guesses when you experiment with new loads.
     

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