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7 mm Ultra Mag Reloading Tips ( 7mm Tejas )

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  #1  
Unread 06-22-2010, 03:43 PM
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Join Date: Jun 2010
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7 mm Ultra Mag Reloading Tips ( 7mm Tejas )

Bare with me guys but i am new to this sight and to the reloading.... I have recently purchased a custom rifle from a guy in town and he did not have any of the reloading information with the gun.... Basically i have a Remington 700 Sendaro 7mm RUM that has been turned into a 7mm Tejas from Performance Guns... It has had a 50 degree shoulder put in it along with the rest of the goodies... The information i am looking to obtain would be how many grains of powder would be good place to start to dial this gun in? Any information on this would be appreciated, Thanks again Dustin
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  •   #2  
    Unread 06-22-2010, 04:30 PM
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    Join Date: Aug 2007
    Location: Canterbury, New Zealand
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    Re: 7 mm Ultra Mag Reloading Tips ( 7mm Tejas )

    If it is an improved 7RUM then you could start with 7RUM loads, be careful reducing loads too much though as I have heard people have had problems downloading the slow burning powders that work best in the 7RUM.
    Most people recommend downloading 10% and then work up. You probably need to only reduce loads about 5%.
    Retumbo is probably a good powder to use.

    Hope this helps.

    Stu
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      #3  
    Unread 06-22-2010, 04:40 PM
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    Re: 7 mm Ultra Mag Reloading Tips ( 7mm Tejas )

    Thanks Stu... Appreciate the advice, Dustin.
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      #4  
    Unread 06-22-2010, 07:32 PM
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    Join Date: Aug 2008
    Location: washington utah
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    Re: 7 mm Ultra Mag Reloading Tips ( 7mm Tejas )

    Brad Stair the maker of these guns told me to start at 5% over max listed load for the standard rum. He also told me that his 7mm tejas had shot over 2500 rounds and still grouped great with a 180 berger at 3400 fps from a 27" barrel.
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      #5  
    Unread 06-22-2010, 08:50 PM
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    Re: 7 mm Ultra Mag Reloading Tips ( 7mm Tejas )

    Thats insane 2500 rounds ? man my 300 ultra only went 1200 now im chasing the throat with 210's.
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      #6  
    Unread 06-22-2010, 10:06 PM
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    Re: 7 mm Ultra Mag Reloading Tips ( 7mm Tejas )

    He said it had something to do with the shoulder angle causing the fire cones most intense heat to contact inside the brass instead of the throat but all i know is the speeds are incredible.
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      #7  
    Unread 06-23-2010, 08:12 AM
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    Re: 7 mm Ultra Mag Reloading Tips ( 7mm Tejas )

    Try a starting load of 88.6 grains of Retumbo and a 180 grn. Berger Hunting VLD and you should reach a max of about 93.03 grains with Rem. brass and Fed 215m primers. IMR 7828,H1000 also work well and you could also give the 168 grn.Hunting VLD a try. Good luck.


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