Flat Point vs Round Nose Accuracy Test

Discussion in 'GSSF' started by Pilot172, Jul 18, 2019.

  1. Pilot172

    Pilot172

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    I'm a sponsored shooter for ACME Bullets. For the past 2 years I have been shooting the 147gr flat point 9mm bullet in GSSF, IDPA and USPSA. ACME told me the 145gr round nose has been increasing in popularity and that some have said it's very accurate, more so than the flat point bullet.

    I decided to do my own tests. I made 2 range trips and used a Walther PPQ 4" and a Glock 34. All shots were taken at 25 yards with my arms resting on a table, no vice or shooting rest. The first trip I only had one load of the flat points, loaded to 1.125" OAL. I tested various OAL's of the round nose. The second trip I tested a few different OAL's of the flat point also. All loads had the same powder load. Here are the results:

    Test #1

    Walther PPQ 4”
    (Bullet, OAL, Ave Grouping at 25 yards)
    FP, 1.125”, 1.9”
    RN, 1.14”, 1.7”
    RN, 1.145”, 1.2”
    RN, 1.15”, 0.9”
    RN, 1.155”, 1.2”
    RN, 1.16”, 0.8”

    Glock 34
    (Bullet, OAL, Ave Grouping at 25 yards)
    FP, 1.125”, 2.5”
    RN, 1.14”, 2.5”
    RN, 1.145”, 1.1”
    RN, 1.15”, 1.2”
    RN, 1.155”, 0.6”
    RN, 1.16”, 0.9”

    Test #2

    Walther PPQ 4”
    (Bullet, OAL, Ave Grouping at 25 yards)
    FP, 1.125”, 2.5”
    FP, 1.135”, 2.0”
    FP, 1.14”, 2.5”
    FP, 1.145”, 2.5”
    RN, 1.135”, 0.8”
    RN, 1.145”, 1.8”
    RN, 1.155”, 0.6”
    RN, 1.135”, 0.4”

    Surprisingly, the round nose was more than twice as accurate. I couldn't believe some of the groupings. I always thought flat points were more accurate due to the longer sidewall. These 145gr RN's have a long sidewall too though.

    One other important note, the RN's make a bigger hole as they "tear" the paper some. The FP's are pretty clean cut. I think these tear marks might give you an edge over the FP's on a shot that's borderline on the next scoring zone.

    Of course results may vary for others (different gun, loadings, loading dies, etc.) and also for different bullet makes, but for me I'm convinced and switching over to the round nose.
     
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  2. Ted Smith

    Ted Smith

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    Like you, I had always believed flat points were more accurate. Thanks for posting these results.
     
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  3. dg370

    dg370

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    Thanks for sharing that data. Nice groups.


    Sent from my iPad using Tapatalk
     
  4. nerr

    nerr

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    Interesting. Thanks.

    Just be sure you don't use ACME bullets for hunting: Wiley Coyote uses ACME products, so their bullets won't work on road runners.
     
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  5. Pilot172

    Pilot172

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    They may not work on road runners, but they sure work good on those cardboard targets!
     
  6. Jim Watson

    Jim Watson

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    Nope.
    USPSA 9.5.4 Radial tears will not count for score or penalty.
    IDPA 4.5.4 A radial tear must not be used to give a shooter a better score.

    Gallant sent me FP instead of RN. They were OK in my STI but I could feel a little bumpity bump when loading. So I made very sure to specify RN the next order. They feed more smoothly.
    I am now loading all .45 RN, not every gun will feed SWC and I am tired of keeping dedicated ammo per gun.
     
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  7. Pilot172

    Pilot172

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    Those are the rules but you still have an advantage with the radial tear. Unless they take out the plastic transparent bullet gauge, the tears appear to make the hole bigger and may sway the decision, especially for the more forgiving or inexperienced RO's.. The FP holes definately "look" smaller.
     
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  8. ADK_40GLKr

    ADK_40GLKr Adirondacker with a Glock

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    I've always preferred RN because of feeding in my Glocks. WC and SWC have chambered very erratically in my Glock Barrels & I guess I avoid FP because they are .... uh.... flatter.

    (But I don't recall any episodes of them hanging up on a feed ramp.)

    Thanks, Pilot, you have reinforced my preference for RN bullets.
     
  9. ADK_40GLKr

    ADK_40GLKr Adirondacker with a Glock

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    ACME 145's eh??? I've been buying 115's cheap, but may try reloading some of "yours"

    I tend to reload everything else (unless I need to replenish my brass supply.
     
  10. Pilot172

    Pilot172

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    I use the 147/145's because they are the softest shooting when needing to make power factor in IDPA. For GSSF, the 115's would be the softest shooting as you can load as low as you want, as long as the gun functions reliably. Use my 10% discount code if you buy some ACME bullets: EF10.
     
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  11. Pistol Pete 10

    Pistol Pete 10

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    Quality of the bullet will have more to do with accuracy than whether FP or RN. I now shoot 200gr Cast RN instead of SWC, the RN are just as accurate as the SWC, as far as I can tell. They work better for fast reloads in my 625 revolver and are very accurate in my 1911 guns.
     
  12. Pilot172

    Pilot172

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    True, I'm just comparing the 2 bullets from ACME. Results may vary with other bullets.
     
  13. PEC-Memphis

    PEC-Memphis Scottish Member

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    So are these "suppressor friendly" like the JHPs (with a jacketed base)?
     
  14. PEC-Memphis

    PEC-Memphis Scottish Member

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    Doh ?
    What powder and velocity/PF?
     
  15. Pilot172

    Pilot172

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    I'm using Titegroup, 3.0gr. Gets about 130PF out of my PPQ Q5 Match. These are powder coated, so OK for suppressors.
     
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  16. PEC-Memphis

    PEC-Memphis Scottish Member

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    Danke...
     
  17. PEC-Memphis

    PEC-Memphis Scottish Member

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    Can you get some of these from them?

    upload_2019-7-23_11-32-45.jpeg
     
  18. Pilot172

    Pilot172

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    Those are special order and you need a permit, Lol.