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Joined: Sep 2004
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Originally Posted by chamois
navlav8r,

This is one of the 150gr 7mm Partitions I recovered in one single cull hunt in Namibia from Oryx, Blue Wildebeest and Red Hartebeest. None stayed inside of anySpringboks or Warthogs I also killed.

The base crimp is quite obvious, as much as I can't see it in the empty Partion pictures.

The bulge that you mention, and that I have never seen in any Partition that I have recovered from game, is not there either. I do not mean it cannot happen, I only say I have never witnessed it in the 15 or 20 Partitions I have recovered from game.

[Linked Image from i.postimg.cc]



So Chamois, you never stated what caliber the original partition was. It looks like it may be a medium bore.

I just looked a sample of three .338 Partitions I have on hand. All three samples (210, 250 Sptzr and 250 RN) have a square, non-crimped base. In addition a look at a .375 cal / 300 gr Partition shows no heel crimp. My .30 cal Partitions (except Partition Golds) have crimped bases like the one shown in the picture above. Maybe someone like JB knows the cutoff in caliber for crimped/non-crimped Partitions.

Edited: The thread title states .30 cal, so my medium bore theory is shot down.

Last edited by MuskegMan; 03/27/21.
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I have recovered dozens and dozens of Partitions from deer, elk, and a moose, and I have never seen anything like that.

Obviously a defective bullet.


Casey

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Was this a factory load or a handload?



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JW

Not being smart. Earlier here he said it was a
Factory load.


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Didn't the original Partitions not have a crimp or not as obvious a one as the current bullets? Front core is pretty typical, back looks defective, no crimp or taper. There are many accounts of Noslers PT loosing one or both jackets but it usually is in association with encountering a signifigant amout of bone and usually tumbling severely. The PT are so good that people think there was some diabolic intervention when they fail, whereas all bullets can fail under certain conditions.

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I can tell you that .35, 225 gr or 250 gr Noslers have square bases and are crimped to hold the rear cores but they don’t have that boat tailed look as shown in the OP. IIRC, Nosler .338 bullets have square bases too.


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If the rear core wasn't there, first thought would be the impact would cause the partition to partially collapse into the empty space. Which didn't seem to happen..My guess....it was originally there...

Last edited by battue; 04/02/21.

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I'm in the camp believing that the rear core was originally present. I'd be shocked if a partition missing the rear core would have flown true at 50/60 yards, plus, I suspect that a hollow rear section would have flared out like a skirt as it left the confines of the muzzle and while there was still remnants of pressure behind it.


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chamois Offline OP
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bruinruin,

the very moment the bullet exits pressure instantly drops to atmospheric pressure so I would not expect any of thet flaring.


also, if the bullet had had the rear section filled with lead I cannot find and explanation for it splasing agains the hide and not penetrating.

for me it is a real mistery, but in my opinion the rear core was not there from the start.

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