.357 mag and 10mm gelatin tests - Page 4
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Old 08-09-2013, 03:41 PM   #31
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Yeah, I don't like making blanket statements because there are always exceptions. Based on my own very limited and unscientific tests, I think the XTP looks like it tends to penetrate more deeply with increased velocity.

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Old 08-12-2013, 05:42 PM   #32
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Yeah, I don't like making blanket statements because there are always exceptions. Based on my own very limited and unscientific tests, I think the XTP looks like it tends to penetrate more deeply with increased velocity.
The XTP is a rather 'tough' bullet which will stand up to higher velocities. I think the XTP went through several changes over the years. The original ones would not have been good self defense bullets but were more suited as hunting bullets. The newer ones expand much more reliably, but still require more velocity than others of this class of bullets to achieve reliable expansion. Therefore they are a good choice for calibers which achieve a high velocity.
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Old 08-12-2013, 05:53 PM   #33
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Originally Posted by bluez View Post
I respectfully,
disagree Sir,

The way In figure it the performance of .357 magnum is so good, the lack of a hollow point in a FMJ is not a significant operational detriment.

But it DOES usefully expand the envelope shooting into vehicles and folks behind light cover such as vests.

For example S&B makes many different .357 Mag loads, including 2 or 3 158 gr.

one of them is 158 GR FMJ at 1400 fps thats as fast in a 158gr as the typical quality 125 gr (!), so its a real hot load with over 600lbs ft of energy .

Thats twice that of a 9 mil and almost as much as some 44 Mag.

BUT unlike the typical 44 Mags its bi-metal FMJ so you can imagine the penetration thru some light cover (steel doors, vests etc) to be even a greater than some 44 Mag loads as those are presumed by the tester to be either HP or SP.

All the while its speed and size assures good on target effect as well.
Fiocchi Ammunition Ballistics
357 Magnum
SJSP 125 grain
Energy 755 ft lb
Velocity 1650 fps

Source http://ballistics101.com/357_magnum.php
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Old 08-12-2013, 08:52 PM   #34
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Fiocchi Ammunition Ballistics
357 Magnum
SJSP 125 grain
Energy 755 ft lb
Velocity 1650 fps

Source http://ballistics101.com/357_magnum.php
What barrel length would that be? One thing some people tend to forget when it comes to defense rounds. You aren't carrying a carbine. Most likely you are carrying a 4 inch or less revolver. I went to the link it doesn't even say if it was a test barrel let alone the length.
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Old 08-13-2013, 06:41 AM   #35
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What barrel length would that be? One thing some people tend to forget when it comes to defense rounds. You aren't carrying a carbine. Most likely you are carrying a 4 inch or less revolver. I went to the link it doesn't even say if it was a test barrel let alone the length.
The local sheriffs department tested the same ammo. From a Ruger Blackhawk with a 6.5" the velocity was pretty close to the same as ballistics 101. I happened to own the blackhawk. I really could care less what most people shoot.

Here are double taps ballistics with a 110 gr bullet.
Velocity: 1640fps / 4" Ruger GP-100
1470fps / 1 7/8" S&W
1810fps / 6"bbl S&W 686
Bullet: 110gr Barnes TAC-XP
Muzzle Energy: 657 ft. lbs. 4"bbl

Doesn't look like double tap was using a carbine. You need a 6" barrel for the powder to burn and the gasses to expand with a 357. I just shake my head when I read all the internet hunters saying a 4" barrel is best for hunting.
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Old 08-13-2013, 06:44 PM   #36
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Don't believe anything DT says.

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Old 08-14-2013, 02:27 AM   #37
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Don't believe anything DT says.
If Double Tap lies about the performance of their ammo it should be very easy to produce tests that prove otherwise. Just your opinion without any evidence to the contrary is slanderous.
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Old 08-14-2013, 10:25 PM   #38
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I'm sorry. I thought their dishonesty was common knowledge. It has been verified by several independent sources. Here's a link to a spread sheet listing claimed and actual velocity for a variety of 10mm loads, click on the bullet weights at the top to change pages: 10mm spread sheet

You can also find plenty of confirmation from various YouTube posters or by just Googling "Double Tap velocity claims."

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Old 08-28-2013, 09:01 PM   #39
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Herp with a side of derp. Sorry.

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