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.357 Carbine: 16 inch beats 18 inch

Discussion in 'Rifle Country' started by LaEscopeta, May 29, 2009.

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  1. LaEscopeta

    LaEscopeta Member

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  2. ArmedBear

    ArmedBear Member

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    Depends what loads you put in it.

    Something like the IMR 4227 I use probably does get a tad more velocity from a longer barrel, since it's a relatively slow-burning powder. I don't have a 16" barrel to test, though.
     
  3. zxcvbob

    zxcvbob Member

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    It probably also depends whether you are using cast bullets or jacketed.
     
  4. LaEscopeta

    LaEscopeta Member

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    The site lists the ammo used, commercially available pistol ammo with mostly some sort of jacket. So I guess the Buffalo Bore of LEVERevolution stuff, with slower powder, could be faster out of a barrel longer then 16”
     
  5. 351 WINCHESTER

    351 WINCHESTER Member

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    I doubt you could tell the difference in performance between the two.
     
  6. zxcvbob

    zxcvbob Member

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    A 158 grain cast lead bullet, even with barrel friction, is still accelerating as it exits a 24" barrel (when loaded with 14 grains of AA#9)

    Same load with a 158 grain jacketed bullet seems to max out at about 22".

    Either bullet is still gaining at 18". It's mostly academic though, there's not a lot of acceleration left.
     
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