357 Mag Terminal Performance

Suputin

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I took a group of 357 Mag rounds out for testing today.

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From left: 38 Spl 158gr +P L-HP, Win 110gr SJHP, 148gr L-SWC, 158gr JFP, Win 158gr SJHP, 158gr Gold Dot, 73gr THV Arcane, 158gr Arcane
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Only the Win 110gr SJHP and the two Arcane rounds were tested against the vest as these were the only ones suspected to have a chance of penetrating.

The Win 110gr SJHP moving at something like 1500fps only penetrated 7 of 21 kevlar layers.
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The 73gr copper TVH Arcane surprisingly did not fully penetrate the vest. The point made it through 17 layers but the body of the bullet remained stuck in the first layer. I suspect this round had an ignition issue as a large amount of unburnt powder was found on the surface of the vest and a subsequent round penetrated wet paper quite well.
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The 158gr Arcane round penetrated the vest and an additional 16" of wet paper.
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For the nosey types, real THV rounds are quite prohibited in this country. A bit of research showed the copper Arcane round pictured here to not be consistent with typical THV rounds. As well the two rounds I "inherited" from Wayne were both expended so the entire argument is pretty much moot.

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The silver Arcane round is of unknown origin and was donated by James from TSE. It is apparently a target bullet that just happens to penetrate kevlar. 8)

For more info on these types of bullets see: http://www.quarry.nildram.co.uk/THV.htm

All the above bullets were also tested in wet phonebooks.

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The most impressive round was the one least suspected to be so: The 38 Spl 158gr LSWC-HP penetrated 8.5" and expanded to .620". This is comparible to the 147gr 9mm tested previously.

Unfortunately the 110gr SJHP got lost. How a bullet can get lost in a phonebook is somewhat of a mystery but it happens.

The 148gr L-SWC went out the bottom of the 16" tall bucket and was not recovered.

The SJFP penetrated 10.25" but only expanded to .440". I only had one of this bullet so there is no live round to photograph in front of the recovered bullet.

The Winchester 158gr SJHP penetrated 6.5" and expanded to .565". It lost 2/3 of its weight in the process. Not very impressive compared to the 147gr 9mm results. I expected better from the bigger 357 Mag cartridge.

The Speer Gold Dot penetrated 10" but it failed to open up. This also has happened with other bullets so I'll have to retest but it is disappointing to see it happen to a premium bullet. It just goes to show you can't predict terminal performance by how a bullet looks cause these things look like flying ashtrays.

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Neither the 73gr Arcane or the 147gr Arcane expanded in any manner. although they do penetrate impressively with the lighter copper bullet stopping at 13" while the heaver version went the whole 16" to the bottom of the bucket.
 
You are testing the wrong bullets. HP and flat-points do not penetrate well. Take any old plain, round-nose FMJ and zing them up to .357 velocities. They will all penetrate.
 
I am pretty sure that the bullets I had were RWS target bullets. I am still looking for the original box.
 
Redleg, I looked all over the internet for RWS target bullets matching the description of these things and could find nothing so I am going to default to the closest thing I could fnid which was the Arcane bullet, even though this might not be correct. If anyone has any further information on this bullet, now would be the right time.
 
Suputin, I have Speer Gold Dot round in 38 Spl. 125gr +P in both the original very large HP and the second generation with a smaller HP. Also I have some 129gr +P+ hydrashoks in 38 Spl. I know from my own tests that they barely get through a couple of layers of kevlar. But they expand well in wet newspaper. The Gold Dots being more consistant than the Hydrashoks. PM me if you want some for testing.
 
The projectile with the THV on the right was not one I recognised, and queried a fellow more into handgun ammo than I. The suggestion was that it was likely a GECO metal penetrating round.
 
Way back it the '70's I found some old (at the time) WW 'Metal Penetrating' .357 magnum ammo.
The profile was quite like the heavy "TGV", but it was a half-jacketed bullet. The pointed tip and a bit of the body had a fairly heavy copper coloured jacket and the bottom half of the bullet was swaged lead.

I don't recall shooting them.
 
PE90: Thanks for the offer but I am kind of done for a while. You oughta try digging through wet phonebooks with snow on the ground :eek:

I couldn't find the 110gr SJHP fired in the last test so we went out and did it again and it turned out to be worthwhile. This little bullet is like Ms. Jackson .... NASTY!

It only penetrated 7" and expanded to .480" but those numbers don't tell the whole story. It shed 50% of its weight and dumped a huge amount of energy into the top layers of paper.

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Check out the size of this cavity. It is HUGE! No other bullet even came close to blowing a hole thise size in the top layers or for that matter anywhere.
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