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300 ultra mag

 
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  #1  
Old 02-07-2013, 10:53 AM
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Join Date: Feb 2013
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300 ultra mag

Looking for a load for a 300 ultra mag 200gr.nosler accubonds using us869.would love any info i can get. Thanks guys.
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  #2  
Old 02-07-2013, 12:25 PM
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Join Date: Jan 2005
Posts: 245
Re: 300 ultra mag

Cant help you with US869 but I'm running 95grs Retumbo with a 200gr Accubond 3100fps....94-95 grs seems to be the spot !
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  #3  
Old 03-01-2013, 09:24 AM
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Join Date: Feb 2010
Posts: 158
Re: 300 ultra mag

I got both my favorite loads here, 300 RUM 94 grs Retumbo with Boran Nitride coated 200 gr. Accubond 3213fps out of a Rem. 700 Police, Nosler Custom brass wit uniformed flash hole, Lee factory crimped. The 338 RUM load I got from JD338 here and it's Retumbo and a 250 gr. Accubond Boran Coated at 3160fps out of a Lilgi 28" #5 profile barrel.
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  #4  
Old 03-01-2013, 05:58 PM
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Join Date: Dec 2009
Location: Boise, Idaho
Posts: 483
Re: 300 ultra mag

When I had my 300RUM I tried US869 and hated it, way too temp sensitive. Retumbo is the powder I used. Some are having good luck with Ramshot Magnum powder.
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  #5  
Old 03-01-2013, 06:53 PM
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Location: N.D.
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Re: 300 ultra mag

I'm shooting 104 gr of wc 872 with the 190 hornady in my 300 rum in rem brass with a 215. I'd back off 10% and go from there as 869 and 872 are very close. You will probably be around 5% down from the top charge.
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