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208 A-Max in 300 RUM

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  #8  
Unread 10-24-2009, 10:10 AM
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Re: 208 A-Max in 300 RUM

One thing I have not thought about is the twist rate for the 208 A-Max, or the 210 Bergers. Will a 1-10 twist be OK?
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  •   #9  
    Unread 10-24-2009, 11:35 AM
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    Re: 208 A-Max in 300 RUM

    That's probably pushing it about as far as you can but i think you will be alright because you can get by with a little less twist with higher velocity. I had an ultra with an 11 twist and i didn't use vld's but shot 220 spitzers just fine because of the high velocity.......rich
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      #10  
    Unread 10-24-2009, 01:45 PM
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    Re: 208 A-Max in 300 RUM

    I just ordered a box of 100 .308 cal 210 Berger's to test in the 300 RUM. I hope they work.
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    "People sleep peaceably in their beds at night
    only because rough men stand ready
    to do violence on their behalf." -- George Orwell --

    Rest easy, sleep well my brothers.
    Know the line has held, your job is done.
    Rest easy, sleep well.
    Others have taken up where you fell, the line has held.
    Peace, peace, and farewell... --Unknown--

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      #11  
    Unread 10-24-2009, 02:46 PM
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    Re: 208 A-Max in 300 RUM

    I use the 210 bergers out of my sendero 300 rum with 92 grains of retumbo with great results
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      #12  
    Unread 10-24-2009, 02:53 PM
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    Re: 208 A-Max in 300 RUM

    Krakkon

    What velocity are you getting with the 210's?
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    "People sleep peaceably in their beds at night
    only because rough men stand ready
    to do violence on their behalf." -- George Orwell --

    Rest easy, sleep well my brothers.
    Know the line has held, your job is done.
    Rest easy, sleep well.
    Others have taken up where you fell, the line has held.
    Peace, peace, and farewell... --Unknown--

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      #13  
    Unread 10-24-2009, 03:08 PM
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    Re: 208 A-Max in 300 RUM

    running at 3000 fps
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      #14  
    Unread 10-24-2009, 10:02 PM
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    Re: 208 A-Max in 300 RUM

    Quote:
    Originally Posted by Cordell View Post
    One thing I have not thought about is the twist rate for the 208 A-Max, or the 210 Bergers. Will a 1-10 twist be OK?
    Cordell, 1 in 10 will be just fine. Berger recommends at least 1 in 11 for the 210s. My 300 Wby is 1 in 10, velocity is 2,960fps out of a 27" lilja and it is 1/2 moa. I would expect your ultra could push a good 100fps faster than this depending on your barrel length and load. Maybe some of the other guys on here will comment on their 300 ultra velocities.
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