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Kinetically Pulled bullet accuracy?

Discussion in 'Handloading and Reloading' started by sublimaze41, Nov 24, 2015.

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  1. sublimaze41

    sublimaze41 Member

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    I was preparing to adjust seating on Sierra 135gr for .308. I didn't want to waste any bullets when checking for O.A.L., so I of course pulled them with a RCBS hammer. There were some brass discolorations where the bullet was seated but other than that unremarkable. In years past I would use the bullets/rounds as fouling shots.

    So, does the use of a kinetic puller distort the bullet as to alter it's accuracy?
     
  2. gfpd707

    gfpd707 Member

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    Most likely there isn't a perceivable loss.
     
  3. Bart B.

    Bart B. Member

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    Put a rubber cushion in it to make a softer landing for the bullets. Their tips will be less distorted and bent.
     
  4. mongoose33

    mongoose33 Member

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    I have a piece of foam rubber in the end of mine to cushion the bullet.
     
    Last edited: Nov 24, 2015
  5. snuffy

    snuffy Member

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    Yeah, it's called an earplug, but I use 2 of them stacked. The bullet tips do not get dinged up then.
     
  6. rcmodel

    rcmodel Member in memoriam

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    10-15 years ago, there was a company making an electronic bullet balance testing machine.
    The name escapes me now, but I think it was the Vern Juenke tester.

    But the machine proved as a fact that just dropping a box of perfect bullets on a hard floor would damage the precise balance in half of them or more.

    PS: I found a modern version DIY kit!!

    http://www.bulletinspector.com/index.htm

    rc
     
    Last edited: Nov 24, 2015
  7. MErl

    MErl Member

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    LOL, $1.3k for an un-assembled hand drawn circuit board and schematic. Even funnier is the "This will not work and we won't refund your money" disclaimer.

    A quick glance looks like it measures how the bullet affects the mutual inductance between two coils as the bullet rotates. A way of determining if it is uniform.
     
  8. Offfhand

    Offfhand Member

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    This is getting off the subject, but handloaders who have never seen or heard of one, attached is a photo of a Juenke concentricity comparator as mentioned by Mr RC in above post. Among other uses, I use the instrument for checking variations in cartridge case walls, as shown here.
     

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  9. Arkansas Paul

    Arkansas Paul Member

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    I stuff a foam earplug into mine as well.
    Works like a champ.
     
  10. Sport45

    Sport45 Member

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    The kinetic puller didn't distort the bullet. That happened when it was seated and crimped.

    It will shoot as good now as it would have before.
     
  11. Hardtarget

    Hardtarget Member

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    I was given a hand full of 55gr V-max for my AR. I noticed they were pulled bullets so I didn't know what to expect. They grouped very well...better than I expected. After all, it was me shooting! :D I'm sure a real bench shooter could have seen the truth of the targets, but I was happy.

    Mark
     
  12. Jayhawk Dan

    Jayhawk Dan Member

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    My kinetic puller causes tip elongation

    Many times when using my kinetic puller I find that the tip--either lead or polymer--of the bullet is elongated (slightly pulled from bullet) sometimes. This happens most often when I have to hit the concrete floor more than two-three times. These are rifle cartridges that are not crimped. Anyone else have this experience? Thanks for reading my post!:)
    Jayhawk Dan
     
  13. Jayhawk Dan

    Jayhawk Dan Member

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    My kinetic puller causes tip elongation

    Many times when using my kinetic puller I find that the tip--either lead or polymer--is elongated (slightly pulled from bullet) sometimes. Happens most often when I have to hit the concrete floor more than two-three times. These are rifle cartridges that are not crimped. Anyone else have this experience? Thanks for reading my post!:)
    Jayhawk Dan
     
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