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Which Powder for 233 w/ 7.5" barrel

Discussion in 'Handloading and Reloading' started by Dustin0, Jul 14, 2011.

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  1. Dustin0

    Dustin0 Member

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    I looking for a load to work up in my SBR its a 7.5 AR. I looking for something that will help cut down on the carbon fauling. Please let me know what you have tried in your rilfe or AR pistol.
     
  2. kingmt

    kingmt Member

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    Only 7.5" would have to be a fast powder but for a AR I have no idea what would operate the action.
     
  3. 243winxb

    243winxb Member

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    Imr 4198
     
  4. kingmt

    kingmt Member

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    That is slower then I would have guessed. I was expecting something between universal & HS6.

    Is it a fire breather with IMR 4198?
     
  5. rcmodel

    rcmodel Member in memoriam

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    Regardless of the barrel length, the powder used in a gas operated firearm must be pretty close to a standard rifle load to operate the gas system without over gassing/too much pressure, or under gassing/not enough pressure.

    Whatever powder gives the highest velocity in a long barrel will also give the highest velocity in a short barrel.

    Just pick a powder you want out of any .223 rifle reloading data and it will be pretty much the right burn rate.

    The IMR-4198 is about as fast a powder as you can use in a standard gas system, regardless of barrel length.

    rc
     
    Last edited: Jul 15, 2011
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