This is a bit math heavy, but will confirm what you probably already know. Heavier conical bullets hit harder than lighter round balls at BP velocities.
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Stopping power of the 1860 Army
- Thread starter Tom A Hawk
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Johnny Tremain
Silversmith in training
I use only round ball and 30gr of 777.
I get the same speeds between a 38 special and a 45ACP.
I get the same speeds between a 38 special and a 45ACP.
Phil Coffins
69 Cal.
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Seemed to have worked just fine at the time it was in common usage.
I'd suspect thru a simple math error... maybe squaring the whole formula line instead of just the velocity.
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It was totally meant as humor ( but factual), most folks around here know I don't shoot bp.
Mike
Erwan
45 Cal.
Stopping power of the 1860 Army...
In this sense, John Pondoro Taylor's empirical formula has retained all its value...TKOF multiplies bullet mass (measured in grains) by muzzle velocity (measured in feet per second) by bullet diameter (measured in inches) and then divides the product by 7,000, converting the grain value into pounds and giving a numerical value from 0 to ~150 for normal hunting cartridges. It is proportional to muzzle velocity multiplied by bullet diameter. Expressed as a fraction:
TKOF = Mass x Velocity X Diameter or TKOF = Mass x Velocity X Diameter/7000
7000
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This works perfectly for old bullets, but is of very relative value for modern calibers and ammunition...
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I see you're pretty new here so maybe you didn't get the "humor" part.
I've been testing the "abilities" of the open-top platform ( when done correctly) and have "put to bed" some of the old "wives tales" that folks like to parrot.
Mike
Ed Sanow's article in Feb 1998 Handguns is the best analysis of C&B revolver stopping efficiency that I am aware of. He shot into ballistic gelatin and compared stretch cavity and penetration with the Fuller Index of stopping power. The Fuller Index correlates to actual live shooting results. As the above table illustrates the round ball was more effective against humans than the conicals. Penetration was less with the round balls but stretch cavity was much greater.
Ed said, "In terms of bullet design, the .454 141gr round ball was more effective during gunfights than .45ACP hardball, .45Colt roundnose, and .44 Special round nose, even those loads generate up to 50% more energy. " He was talking about the 1860 Army.
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By "stopping power" are you guys talking muzzle energy, energy upon arrival, energy dump when passing through some part of the body, the effects of light weight round noses versus heavier flat noses or what?
Well in the referenced video, the guy was taking fps and bullet weight into account so I imagine it's more a function of muzzle energy. So, I would assume that's what the discussion is about. That's what my response was anyway.
The "muzzle energy" of an 1860 Army can be anywhere between 200ish ft.lbs to 500ish ft.lbs. depending upon the "fuel delivery" system. The 1860 Army can be quite the beast!!!
Mike
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