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357 barrel length and velocity ... again
1/12/2012 1:20:45 PM
The new issue of AMERICAN HANDGUNNER magazine showed up yesterday, and on the back page is an article about the .357 Magnum and barrel length. He gives velocities of various loads in barrel barrel lengths from 2.25 inchs to 6 inches in revolvers, and the 18.5 inch barrel of a Ruger 77/357.
Bottom line is that with full power 357 loads, there is only about 100 fps difference between a 2.25 inch and a 6 inch barrel revolver, but the carbine barrel shoots those loads about 500 fps faster than the 6 inch revolver.
Unfortunately he didn't test any loads will bullets heavier than 158 grains.
Bottom line is that with full power 357 loads, there is only about 100 fps difference between a 2.25 inch and a 6 inch barrel revolver, but the carbine barrel shoots those loads about 500 fps faster than the 6 inch revolver.
Unfortunately he didn't test any loads will bullets heavier than 158 grains.
1/12/2012 3:00:41 PM
Modeled by QuickLoad, pressure & speed vs barrel length (non-revolver):
1/12/2012 3:17:04 PM
Ballistics By The Inch for 357 Mag. However, he too stops at 158grn but goes from 2" up to 18" in 1" increments. I'm guessing that's where American Handgunner got their information.
1/12/2012 4:44:07 PM
Originally Posted By COSteve:
Ballistics By The Inch for 357 Mag. However, he too stops at 158grn but goes from 2" up to 18" in 1" increments. I'm guessing that's where American Handgunner got their information.
Ballistics By The Inch for 357 Mag. However, he too stops at 158grn but goes from 2" up to 18" in 1" increments. I'm guessing that's where American Handgunner got their information.
No, AH got their information by actually shooting the ammo over a chronograph.
1/13/2012 5:30:14 AM
Originally Posted By COSteve:
Ballistics By The Inch for 357 Mag. However, he too stops at 158grn but goes from 2" up to 18" in 1" increments. I'm guessing that's where American Handgunner got their information.
Ballistics By The Inch for 357 Mag. However, he too stops at 158grn but goes from 2" up to 18" in 1" increments. I'm guessing that's where American Handgunner got their information.
Interesting that, in the real-world weapons, the 16-inch rifle produced 200-300fps
higher velocity than the 18-inch revolver across the board. Too bad there wasn't a
20-inch 92 or 94 available for testing.
1/13/2012 7:30:20 AM
Originally Posted By Otterstedt:
The revolver would lose a small amount of gas pressure between the cylinder and the barrel, at the forcing cone. It is, however, pretty interesting to see the difference in velocity as a result of this.
Interesting that, in the real-world weapons, the 16-inch rifle produced 200-300fps
higher velocity than the 18-inch revolver across the board. Too bad there wasn't a
20-inch 92 or 94 available for testing.
Originally Posted By COSteve:
Ballistics By The Inch for 357 Mag. However, he too stops at 158grn but goes from 2" up to 18" in 1" increments. I'm guessing that's where American Handgunner got their information.
Ballistics By The Inch for 357 Mag. However, he too stops at 158grn but goes from 2" up to 18" in 1" increments. I'm guessing that's where American Handgunner got their information.
The revolver would lose a small amount of gas pressure between the cylinder and the barrel, at the forcing cone. It is, however, pretty interesting to see the difference in velocity as a result of this.
Interesting that, in the real-world weapons, the 16-inch rifle produced 200-300fps
higher velocity than the 18-inch revolver across the board. Too bad there wasn't a
20-inch 92 or 94 available for testing.
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