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Hornady 55 gr FMJBT bulk variation

Discussion in 'Handloading and Reloading' started by CMV, Jan 1, 2012.

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  1. CMV

    CMV Member

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    Grabbed a handful (35) & weighed & noticed my 55 gr projectiles aren't 55 gr.

    55.0 - 1 - 2.9%
    55.1 - 5 - 14.3%
    55.2 - 23 - 65.7%
    55.3 - 6 - 17.1%

    Don't know the significance - just an observation from one small sample.
     
  2. ljnowell

    ljnowell Member

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    Thats pretty good for fmj in my opinion.
     
  3. helotaxi

    helotaxi Member

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    Pretty good for bulk FMJ bullets. I've seen more expensive bullets with more variation.
     
  4. Walkalong

    Walkalong Moderator

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    That's real good, but insignificant versus the base. No open base 55 Gr FMJ is going to shoot great, although the Hornady' have a rep for being very good for 55 Gr FMJ.
     
  5. Ares45

    Ares45 Member

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    Winchester FMJ are worse.
     
  6. Walkalong

    Walkalong Moderator

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    Not only the weight of the Winchesters, but the cannelures are all over the place as well.

    [​IMG]
     
  7. capreppy

    capreppy Member

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    Wow, that is pretty bad. This is pretty much why I don't load to the cannelure.
     
  8. wanderinwalker

    wanderinwalker Member

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    That's why I gave up chasing the tail of using 55gr FMJs for 200-yard "practice" (because I was using Winchesters...). I know a few people who still use FMJ .223 to practice offhand shooting, but they use the Hornadys, which seem to be much more consistent.
     
  9. gpb

    gpb Member

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    "Don't know the significance - just an observation from one small sample. "

    A target will tell you the significance.
     
  10. Walkalong

    Walkalong Moderator

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    Yep, but hey, they were $30 per K, many years ago. Wish I had bought more than I did.

    I buy cheap for plinking blasting ammo. I don't need 1 MOA for playing. Heck, 2 MOA for that matter. I am shooting surplus powder I bought at $62.50 per 8 pounds delivered.

    For more accurate ammo I buy V Max's or SP's or whatever is on sale. Heck, I'm not target shooting, just playing.
     
  11. Blue68f100

    Blue68f100 Member

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    Walkalong, That's pretty bad. But there is a reason there bulk. Could even be classified as seconds...
     
  12. RustyFN

    RustyFN Member

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    Walkalong just wondering what you would consider not great at say 100 yards? I have shot mainly the Hornady bulk 55's in my AR and was wondering if my groups were decent. I'm going to order some better bullets and see if I can get the groups any smaller.
     
  13. atblis

    atblis Member

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    Try the Hornady Flat base Soft Point 55s. They sell them in bulk. The flat base is a bit annoying to load.
     
  14. Walkalong

    Walkalong Moderator

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    How?
     
  15. beatledog7

    beatledog7 Member

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    Walkalong,

    Those Winchesters are all different profiles as well. I'm thinking they might be a mix of models that just happen be all the same weight. They are pretty much the same weight, right?
     
  16. helotaxi

    helotaxi Member

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    Not him, but my experience has been as bad as 5MOA on a rifle that shoots MOA on a bad day. This is from a bolt gun, not an AR. I was using them to try to sight the rifle in, not knowing any better. Waste of time chasing a zero since they patterned rather than grouped.
     
  17. helotaxi

    helotaxi Member

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    No kidding. With a good seating die and just a small chamfer on the case mouth, flat base bullets go right in.
     
  18. Walkalong

    Walkalong Moderator

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    About right, with 3 or 4 being average. They are not for target shooting. Not designed for it, nor suitable for it.

    Yep, they all weigh 55 Grs +/-
     
  19. atblis

    atblis Member

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    Any extra steps, especially ones that involve me having to handle the case are an annoyance. Having to chamfer = annoying. BT bullets I can just drop right in and seat. That being said, I just a Lyman M die for the flat base bullets.
     
  20. helotaxi

    helotaxi Member

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    By a "small chamfer" I mean simply removing the burr from trimming. Depending on your trimmer, that may or may not be required. With my 3-way cutter, it isn't. With a Gracey, Giraud or Dillon it isn't. I can't speak for the WFT. I do have to break the burr in and out with the Possum Hollow. I do it out of habit with my Forster lathe trimmer even though it leaves a nice clean cut that doesn't need it.
     
  21. Walkalong

    Walkalong Moderator

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    Deburring and chamfering is just good reloading practice, but I can see where you would not like flat base bullets if you do not chamfer at all.
     
  22. RustyFN

    RustyFN Member

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    Thanks. I'm shooting a RRA AR 15 from a rest. I'm getting three shot groups you can touch all three with a dime and five shot groups you can touch all five with a quarter.
     
  23. atblis

    atblis Member

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    On low volume precision stuff, I certainly do that. For bulk 5.56/223 where I am trying to load up 5k+ rounds at a time, chamferring is a hassle and minimally beneficial. If I can't do it on a Dillon with a case-feeder, I ain't doing it.

    Anyways the solution I found was to use a Lyman M die immediately after the Dillon trimmer, and the tumble. The M die and tumbling removes the burrs. Adding a slight step flare with the M die allows easy seating of the flat based bullets.
     
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