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For anyone interested SPS is showing 30cal 150gr. Partitions in stock $30

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I remember this cool thread, good stuff Teeder.


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This has been an excellent thread. Thanks to MD and Teeder and everyone else.

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I haven't sectioned one, but....

Here is a 100gr Partition, .257 Roberts. Started out at 3200fps + or - a bit. Deer angling away from left to right at 160 yards. Impact at about 2800fps, in behind right front and caught under the hide of the left front shoulder. Expanded to .408, and retained 61% weight.

[Linked Image from i.imgur.com]
[Linked Image from i.imgur.com]


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Originally Posted by beretzs
Originally Posted by Teeder
I probably should do a round 3 follow-up. Pretty sure I have some PT's that weren't cut yet.

I'd be all eyes to see that.

Originally Posted by CZ550
Some may find the following both interesting and having some significance: I have two .338-caliber, 250gr Partitions retrieved from a bull moose. From 165 yards the first went through the broadside chest behind the shoulders, sending lung tissue and blood about 20 yards across the bushes. The 1000 - 1100 lb bull staggered but wasn't going anywhere. The 250 Partitiion left the muzzle of my .340 Wby at ~ 3000 fps (many chronographed before the hunt). So impact was around the .338 Win Mags published MV. I sidestepped a few yards for a better angle and the bull saw me for the first time and started to swing away. I gave him another that hit behind the short ribs as he was swinging away and he went down in a depression, out of sight. But I was ready to give another if he got back up, which he didn't until a few minutes later when my son arrived from a blind 350 yards away. He got too close and the bull stood in a very wobbly condition - and wasn't going anywhere. But I'd closed the distance to about 35 yards, and when he stood all I could see was his rump facing me whereupon I gave him another in the rump and he went down to stay. My son saw the bulge of my second shot on the offside about 4 inches from the exit wound from the first shot. He dug it out with a knife. That was the first 250gr retrieved. The 250gr from the third shot into the rump was also found by the butcher in the front part of the chest cavity. Before the carcass was delivered to the butcher 36 hours later (we had to wait until the following day to finish matters before leaving camp, then a 1000 mile drive home, then the following morning the moose was delivered to the butcher). So the moose had been field dressed and cut in two aft the short ribs to fit on out trailer. That bullet, as stated, was found by the butcher in the front portion of the rib cage.

The two bullet retrieved: The second, found under the hide by my son next to the first exit wound = 173 grains (69%)/ .61" avg diameter/ .58" in length. The last shot (3rd) into the rump, found by the butcher in forward part of chest cavity = 175 grains (70%)/ .70" by .62" expansion/ .45" in length, from 35 yards impact velocity was 2900 fps yet it epanded more, penetrated more and was significantly shorter! Of course, impact velocity was about 250 fps faster than the first two shots from 165 yards.

A 286 Partition was retrieved from a black bear shot frontally in the chest. In skinning it was found just poking through the hide in the right flank just in front of the hip. That bear went over an embankment and found dead at the bottom. It's retrieval is another story, but:

The bullet had tumbled with some "wings" on one side pointing forward. Nontheless, it retained 74% of initial weight (211 grains). MV from my 9.3 x 62 (1/14 twist) = +2600 fps. From treestand to bear = 68 yards as it faced me.

Bob
www.bigbores.ca

Great info. I shot a few elk with the 250 PT's from the 338 Win with a 2780 start speed and never even came close to recovering one of them. 210's whistled thru elk pretty easily as well.

It's important to note, I think, that the first shot (broadside) gave complete penetration with lung tissue and blood scattered across bushes for approx. 20 yards. That was a penetration of at least two feet. The next shot angled from behind the short ribs to just under the hide against the offside shoulder, leaving a bulge immediatelly seen by my son, which would have been a penetration of close to four feet. The last into the rump, found by the butcher in the forward part of the rib cage, would have been close to six feet. Little wonder that full penetration on elk would be expected by the 250/.338 hitting slower on a lighter animal... I think.

Bob
www.bigbores.ca


"What shall it profit a man if he gain the whole world and lose his own soul" - Jesus

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MD,
Any idea why Nosler didn't just leave the rear of the partition copper alloy? It seems that would have made manufacturing easier (and cheaper) and accomplished the same goal. That would have made the rear slightly less dense, but time has shown that hasn't been an issue for monos with penetration.

Maybe accuracy with different metals/density on front and back half? I would assume accuracy would be best when the entire bullet has the same jacket and cores?

Last edited by bonepoint; 09/19/22.
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Originally Posted by HeavyLoad
For anyone interested SPS is showing 30cal 150gr. Partitions in stock $30

thank you for that - I just received some of these.
I didn't see these 30 cal 150 partitions in the sectioned bullet pictures, but I suspect these will work just fine ; - )

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