.357 Magnum Ballistics from a 20" Barrel

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Crash
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.357 Magnum Ballistics from a 20" Barrel

Postby Crash » Sun Nov 12, 2017 5:43 pm

Anybody know the ballistics, i.e., velocity and muzzle energy, of the Hornady 140 Flextip .357 Magnum round from a 20" rifle barrel out to 100 yards?

Thanks,

Crash

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Bitter Clinger
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Re: .357 Magnum Ballistics from a 20" Barrel

Postby Bitter Clinger » Sun Nov 12, 2017 7:33 pm

"You may all go to H3ll, and I will go to Texas." - Davy Crockett
"Fast is fine, but accuracy is everything." - Wyatt Earp
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philbo
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Re: .357 Magnum Ballistics from a 20" Barrel

Postby philbo » Mon Nov 13, 2017 1:50 am

Hornady has made the claim that the 140-grain Leverevolution gets 1850 fps and 1064 lb-ft from an 18″ carbine. Velocity from a 20" barrel may not be much different, especially if they are using a fast burning propellant designed to burn in a shorter barrel. Of course one gun isn't always equal to another and short of running a chrono with your rifle it's only a guess.

https://www.ballisticstudies.com/Knowle ... agnum.html


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Crash
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Re: .357 Magnum Ballistics from a 20" Barrel

Postby Crash » Mon Nov 13, 2017 2:36 pm

Bitter Clinger wrote:This one?:

https://www.hornady.com/ammunition/hand ... olution#!/#specs


Bitter Clinger,

Thanks a lot--this is very helpful.

Crash


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Crash
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Posts: 308
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Re: .357 Magnum Ballistics from a 20" Barrel

Postby Crash » Mon Nov 13, 2017 2:36 pm

philbo wrote:Hornady has made the claim that the 140-grain Leverevolution gets 1850 fps and 1064 lb-ft from an 18″ carbine. Velocity from a 20" barrel may not be much different, especially if they are using a fast burning propellant designed to burn in a shorter barrel. Of course one gun isn't always equal to another and short of running a chrono with your rifle it's only a guess.

https://www.ballisticstudies.com/Knowle ... agnum.html


Philbo,

Thanks, appreciate it.

Crash


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