Originally posted by Buzzo
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Pistol cartridge power comparison
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It wasn't that bad. But I did learn something from it, primarily there really is very little difference between ALL of the popular calibers. Revolvers obliterate semi autos for power as expected, 10mm and .357 sig set themselves apart from the main pack, and .380 sucks. I was surprised to see .41 mag so damn close to 44 mag as well."When the people find that they can vote themselves money, that will herald the end of the republic." -Benjamin Franklin
"A democracy will continue to exist up until the time that voters discover that they can vote themselves generous gifts from the public treasury." -Alexander Fraser Tytler
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After reading your chart, Im going to start carrying my 640 .357 a lot more. Im not even going to bother shopping for a pm9 as I was. I never knew .357 was as much of a bad ass as it is.Originally posted by CJ View PostIt wasn't that bad. But I did learn something from it, primarily there really is very little difference between ALL of the popular calibers. Revolvers obliterate semi autos for power as expected, 10mm and .357 sig set themselves apart from the main pack, and .380 sucks. I was surprised to see .41 mag so damn close to 44 mag as well.
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.327 didn't perform nearly as well as I had thought it would. Oh well, it's still one of my favorites that I've ever shot -- when the fucking yoke screw stays in.
If the power factor is closely related to felt recoil as Tony stated, that .327 I have kicks harder than any subcompact .45 I've ever shot.How do we forget ourselves? How do we forget our minds?
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There is a lot of factors that go into perceived recoil, such as the length between the firing plane and your grip, as well as weight and barrel length. It's very difficult to positively quantify.Originally posted by Geor! View Post.327 didn't perform nearly as well as I had thought it would. Oh well, it's still one of my favorites that I've ever shot -- when the fucking yoke screw stays in.
If the power factor is closely related to felt recoil as Tony stated, that .327 I have kicks harder than any subcompact .45 I've ever shot.
That was the hottest load I could find within max pressure for .327.
I have found some more loads for .327 that seem out of place, and there is no pressure data with them. Federal is showing a 100gr projectile @ 1500fps - 500ft/lbs , but those rounded numbers always make me suspicious.Last edited by CJ; 01-31-2013, 11:30 AM."When the people find that they can vote themselves money, that will herald the end of the republic." -Benjamin Franklin
"A democracy will continue to exist up until the time that voters discover that they can vote themselves generous gifts from the public treasury." -Alexander Fraser Tytler
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I actually just dug an old box up that I couldn't find yesterday. It's showing 500ft/lbs energy and 1500fps.Originally posted by CJ View PostThere is a lot of factors that go into perceived recoil, such as the length between the firing plane and your grip, as well as weight and barrel length. It's very difficult to positively quantify.
That was the hottest load I could find within max pressure for .327.
The two boxes of "personal protection" ammo I have are 1380/486 and 1400/370.
Seems to be quite a bit of variation between those two JHP rounds and both use the same grain projectile... What could explain that? If it was powder load, wouldn't the velocity be lower on the round with the lower energy? Learn me up dude!How do we forget ourselves? How do we forget our minds?
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Haha, did you see how I edited my last post. Who makes that 1500fps 100gr round, what is the load info?Originally posted by Geor! View PostI actually just dug an old box up that I couldn't find yesterday. It's showing 500ft/lbs energy and 1500fps.
The two boxes of "personal protection" ammo I have are 1380/486 and 1400/370.
Seems to be quite a bit of variation between those two JHP rounds and both use the same grain projectile... What could explain that? If it was powder load, wouldn't the velocity be lower on the round with the lower energy? Learn me up dude!"When the people find that they can vote themselves money, that will herald the end of the republic." -Benjamin Franklin
"A democracy will continue to exist up until the time that voters discover that they can vote themselves generous gifts from the public treasury." -Alexander Fraser Tytler
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energy (in foot-pounds) = bullet weight (in grains) / (7000 * 32.174 to convert from grains to pounds and from weight to mass) * velocity (in feet per second) ^ 2
What weight are the personal defense bullets?Originally posted by BroncojohnnyHOORAY ME and FUCK YOU!
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That has to be a legit load, I know Federal would not exceed max pressure, and I've verified it on 3 sites now. Updated on chart, moved it up two places.Originally posted by Geor! View PostIt's that Federal load you mentioned for sure."When the people find that they can vote themselves money, that will herald the end of the republic." -Benjamin Franklin
"A democracy will continue to exist up until the time that voters discover that they can vote themselves generous gifts from the public treasury." -Alexander Fraser Tytler
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I can add the formula and recalculate all the energy in real time, but I'm using manufacturer specs which I presume are done correctly. I've been considering recalculating.Originally posted by Nash B. View Postenergy (in foot-pounds) = bullet weight (in grains) / (7000 * 32.174 to convert from grains to pounds and from weight to mass) * velocity (in feet per second) ^ 2
What weight are the personal defense bullets?"When the people find that they can vote themselves money, that will herald the end of the republic." -Benjamin Franklin
"A democracy will continue to exist up until the time that voters discover that they can vote themselves generous gifts from the public treasury." -Alexander Fraser Tytler
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All of my pistols are .40 and .357 sig. And I've owned/shot just about every caliber out there. As far as cost (.357 sig excluded) the .40 has always been my favorite all around caliber.
Now the .357 sig to me has just as much power as a 10mm, .357 mag or even .44 mag (and this chart confirms that, thx CJ!)
And 9mm, me la pela!Originally posted by SilverbackLook all you want, she can't find anyone else who treats her as bad as I do, and I keep her self esteem so low, she wouldn't think twice about going anywhere else.
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Are you sure that's right?Originally posted by Nash B. View Postenergy (in foot-pounds) = bullet weight (in grains) / (7000 * 32.174 to convert from grains to pounds and from weight to mass) * velocity (in feet per second) ^ 2
What weight are the personal defense bullets?
I'm using
for my data to render the correct info, your formula gives me double the correct energy. I recalculated and mostly it just rounded up or down on a few loads but nothing changed as far as placement.=B3/(7000*32.174)*C3^2/2
edit: yes it's 1/2mv²"When the people find that they can vote themselves money, that will herald the end of the republic." -Benjamin Franklin
"A democracy will continue to exist up until the time that voters discover that they can vote themselves generous gifts from the public treasury." -Alexander Fraser Tytler
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I was mistaken. One is 115 and the other is 85. I thought they were both 115.Originally posted by Nash B. View Postenergy (in foot-pounds) = bullet weight (in grains) / (7000 * 32.174 to convert from grains to pounds and from weight to mass) * velocity (in feet per second) ^ 2
What weight are the personal defense bullets?How do we forget ourselves? How do we forget our minds?
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10mm has a pretty big increase in energy over a .357 sig, you're going from a 115gr to a 155gr projectile in the comparison, and it's 20% more powerful. That's pretty substantial in comparison to all the other cartridges. .357 is a lot more stout than I had originally thought, but it's also a bitch to reload.Originally posted by Rick Modena View PostAll of my pistols are .40 and .357 sig. And I've owned/shot just about every caliber out there. As far as cost (.357 sig excluded) the .40 has always been my favorite all around caliber.
Now the .357 sig to me has just as much power as a 10mm, .357 mag or even .44 mag (and this chart confirms that, thx CJ!)
And 9mm, me la pela!"When the people find that they can vote themselves money, that will herald the end of the republic." -Benjamin Franklin
"A democracy will continue to exist up until the time that voters discover that they can vote themselves generous gifts from the public treasury." -Alexander Fraser Tytler
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Yeah, I forgot to add it on at the end.Originally posted by CJ View PostAre you sure that's right?
I'm using
for my data to render the correct info, your formula gives me double the correct energy. I recalculated and mostly it just rounded up or down on a few loads but nothing changed as far as placement.
edit: yes it's 1/2mv²Originally posted by BroncojohnnyHOORAY ME and FUCK YOU!
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