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300 ultra mag ammo???

 
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  #8  
Old 11-19-2011, 12:16 PM
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Join Date: Aug 2011
Location: Lynchburg, TN
Posts: 713
Re: 300 ultra mag ammo???

I ended up loading the Swift Scirocco II 150 gr. bullets in my Sendero 7 RUM. They shot better than any other bullet.
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  #9  
Old 11-20-2011, 01:21 PM
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Join Date: Nov 2011
Location: philipsburg pa
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Re: 300 ultra mag ammo???

I shot the swift's in my 300 rum and got 1 inch 3 shot groups at 300 yards but that was handloads.I never shot the factory ammo out of it,but the bullets worked well for me for accuracy and performance on game.Bought a 338 rum friday.I love it.
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  #10  
Old 11-24-2011, 06:59 PM
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Join Date: Apr 2011
Location: Clearfield County, PA
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Re: 300 ultra mag ammo???

My XCR II likes the Federal Trophy Tips and the Barnes Vortex ammo both in 180 grain
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  #11  
Old 12-15-2011, 10:51 PM
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Join Date: Aug 2011
Location: modesto ca
Posts: 7
Re: 300 ultra mag ammo???

Started playing with loads and long range shooting about 5 years ago, went through 2 guns and finally settled on the sendero in 300 ultra mag. After trying about 6 different bullets, swift, nossler, hornady and so on I decided to try the 185 grain Burger VLD. My 5 shot group went from 3 to 4 inches at 200 yards with the other bullets to 1/2 inch at 200 yards with the burger. In order to achieve that group I had to play with bullet seating depth until I hit my sweet spot. Thats the only bullet I was able to achieve that results with.
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  #12  
Old 10-29-2013, 05:35 PM
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Join Date: Jul 2012
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Re: 300 ultra mag ammo???

So what was your sweet spot in the OAL ???
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  #13  
Old 10-29-2013, 09:18 PM
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Location: modesto ca
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Re: 300 ultra mag ammo???

My electric measuring device isnt working but measuring the best i can without digging thru all my papers it is 3 and 11/16 inches long.
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  #14  
Old 10-30-2013, 07:09 AM
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Join Date: May 2012
Location: N.D.
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Re: 300 ultra mag ammo???

As a few of the others have said, rem ammo isn't great and the accuracy spread is pretty abysmal between rifles. I had a box of the 180 Scirocco factories for my 300rum and they shot moa, so I got half the accuracy that I do from my handloads at $3 a pop. I've seen other rifles do 4-5 inch groups with rem factory ammo so I wouldn't be surprised if your rifle went there.
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