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Subject Topic: .30 Carbine v. .327 Fed Mag Blackhawks Post ReplyPost New Topic
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richhodg66
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Posted: March 16 2017 at 7:23pm | IP Logged Quote richhodg66

jski wrote:
When you watch a bullet penetrate a block of bio-gel you can watch the
sock wave move throughout the entire block. That wave is hydraulic
shock and it tears a much larger hole than simply could be accounted
for by the bullets diameter. This is created by the energy imparted from
the bullet into the gel. And a .30 Carbine round fired from an M1
Carbine has more energy at 100 yards that a .357 at muzzle... both
using 110 gr. bullets.

That is very real.

BTW, the very slight tapering of the.30 Carbine case is intended to
make it easier to feed in the carbine rifle. A much more extreme
example of this is the Russki 7.62x39mm for the AK47.




Energy isn't the full story. How well a bullet design transfers energy makes a big difference and things like frontal diameter, size of the meplat, how much it deforms going through, etc., can make something with a lot less energy a better killer. I'd a lot rather use a .35 Remington on der than a .220 Swift.

Not sure where you read linotype is good for hunting. The stuff is real hard, but brittle. Too much antimony makes for a bullet that fractures. A god hunting alloy balances antimony with tin so that it is malleable. The last seven deer I've killed with rifles have used cast. Before I went to cast exclusively, I killed maybe 10-12 with cast in muzzleloaders, which is no real trick as a dead soft slug a half in in diameter transfers energy with frightening efficiency despite being slow. Only ever recovered one muzzle loader bullet, but it was under the hide on the off side of a big deer and looked like a lead half dollar coin. I "autopsy" a few deer a year and trust me, an FMJ bullet isn't going to do the damage one of those does, I don't care how ballistic gelatin reacts.

Do post results with that Blackhawk, I'm real interested in what one will do. I haven't even shot mine yet, and even though I've loaded a lot of revolver rounds over the years, the dynamics of this one seem pretty different.

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jski
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Posted: March 16 2017 at 11:36pm | IP Logged Quote jski

Guys,

E=1/2*mv^2 where E is energy, v is velocity, and m is mass. So
changes mass (weight) certainly play a role in energy. But changes in
velocity play a bigger role.

If you double the mass, you double the energy. BUT, if you double the
velocity, you quadruple the energy.

Now the bullet design tells the other half of the story. How do I make
sure that when I hit something, there's as complete as possible of a
transfer of energy into the target as possible?

BTW, you don't have to sell me on big bore. One of my favorites is my
S&W .45 Colt Mountain Gun. And I shoot lots of fat cast bullets out of it.

Edited by jski on March 17 2017 at 9:38pm
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richhodg66
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Posted: March 17 2017 at 6:10am | IP Logged Quote richhodg66

"Now the bullet design tells the other half of the story. How do I make sure that when I hit something, there's as complete as possible of a transfer of energy into the target as possible?"

Large meplat. Not big game, but been shooting a lot of squirrels for a few years now with a WFN bullet in light .22 Hornet loads. Even as slow as I've been pushing them (sometimes sub sonic) they kill as well or better than .22 LR high velocity hollow points.

All the "on paper" energy is worthless if most of it is expended on the far side of whatever you're shooting with it.

Edited by richhodg66 on March 17 2017 at 6:11am


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RT58
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Posted: March 17 2017 at 8:30am | IP Logged Quote RT58

Yup, 30+ years ago those same gun writers used the same physics lecture to convince their readers the small, fast projectiles were better than the slow fat ones. Double the velocity does quadruple the energy, but that is kinetic energy. Even if you do achieve "complete energy dump" on the target, which you aren't going to do, the energy isn't enough to matter in a gun fight, or on game. The only time trauma has an immediate affect on a living target is if it is close enough and severe enough to damage a vital organ, such as the heart. But even in those cases it rarely results in immediate incapacitation as they were trying to claim.

If you ever get a chance to watch videos of real shootings, pay very close attention to the people as they get shot. They are much more informational than garbage written by inexperienced "experts".
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jski
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Posted: March 29 2017 at 10:36pm | IP Logged Quote jski

This sums up the 30 Carbine v. its little brother, the 327 Fed Mag:




http://i137.photobucket.com/albums/q201/Molasses_photos/Toys /MVC-
034F.jpg


***Adding links to images doesn't appear to work on this website.

Edited by jski on March 29 2017 at 11:11pm
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REM1875
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Posted: March 30 2017 at 1:40am | IP Logged Quote REM1875

jski wrote:
This sums up the 30 Carbine v. its
little brother, the 327 Fed Mag:




http://i137.photobucket.com/albums/q201/Molasses_phot
os/Toys /MVC-
034F.jpg


***Adding links to images doesn't appear to work on
this website.




I don't see anything- says images have been moved
jski?

Edited by REM1875 on March 30 2017 at 1:41am


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jski
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Posted: March 30 2017 at 4:27pm | IP Logged Quote jski

Rem1875, check to make sure there are no spaces in the URL. It's
there alright.
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REM1875
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Posted: March 30 2017 at 10:49pm | IP Logged Quote REM1875

[/QUOTE] JD, if it makes you feel better, Henry now
makes the Big Boy and Big Boy Carbine in .327/ .21
H&R!
[/QUOTE]

Waiting not so patiently till they hit the market

Tired of acting like a good boy so I can get one.

The 327 will also shoot 32 ACP as they have enough rim
to hold them.
(I am not going to risk running them through a Henry
though due to questions as to how they will feed)




Edited by REM1875 on March 31 2017 at 1:49am


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