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custom barrel for .300 ultra

 
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  #1  
Old 12-18-2010, 11:36 PM
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Join Date: Apr 2009
Location: Wishing I was back in MT
Posts: 96
custom barrel for .300 ultra

What would by your # 1 choice for a custom barrel for a sendero .300 ultra mag shooting 210 bergers. My factory barrel just isn't what it should be IMO. I have tried the 168 bergers with two different powders and am lucky told hold moa consistently. I am going to give the 210s a try and if they don't perform, its time for a new tube.

Thanks,
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  #2  
Old 12-18-2010, 11:44 PM
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Join Date: Dec 2002
Location: Wyoming
Posts: 183
Re: custom barrel for .300 ultra

Only two? I spent days at the range and went through probably 40 powder/load combinations before I hit on the one I liked....
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  #3  
Old 12-18-2010, 11:50 PM
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Join Date: Apr 2009
Location: Wishing I was back in MT
Posts: 96
Re: custom barrel for .300 ultra

LOL, I guess I have never had this much difficulty in finding a combination. The rifle has been bedded, trigger work, good optics. I would have broke something if I had to go through that many combos before finding one that worked in a rifle not to mention by then it would be darn close for a new tube anyway.
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  #4  
Old 12-19-2010, 12:00 AM
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Join Date: Dec 2009
Location: Boise, Idaho
Posts: 483
Re: custom barrel for .300 ultra

I feel for you as I too went through the same problems, I jumped on the berger bandwagon but I knew I was only interested in either 185's, 190's or 210 bergers. At 100 yards they shot great, I put alot of rounds through my gun, but once I moved out to 200 yards my groups went to hell. So then I tried other bullets, other powders, other primers, different seating depths and nothing was working and I was racking up my rounds down the barrel. Ok now lets go back about 6 months when I bought the gun brand new and took it straight to a gunsmith and had it worked over and a muzzle break put on. One of the things I kept blaming for my lousy groups was the trigger, so I bought a jewell, didn't help. Then another gunsmith told me to try barnes 180gr TTSX and for me to call his friend. Well because of the amount of rounds down the barrel it was felt the barrel was shot out. I took my gun to another smith and he took a look at the muzzle break and said it was built all wrong, there were some other things that I had done to the gun that were not right. We talked and agreed that the muzzle break was the biggest cause from the lousy acuracy from the gun. So he took the break off, yes now my gun does not have a muzzle break but I don't feel the recoil is nothing I can't handle. He also gave me a load to try and is suppose to be pretty deadly in the sendero 300RUM. To make a long story short I did take the gun out the other morning even thou it was colder then heck, I had to re-sight in my gun and then moved out to 200 yards and was pleasently suprised at the good groups, finally my gun was shooting the way it should. But I won't be able to do anymore shooting until I heal from my back surgery in January, so come April then I can start shooting to make sure. If I still can't get it to shoot any better then I will rebarrel it and have it rechambered to a 7MM STW. Good luck on your qwest for an acurate load.
Chuck
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  #5  
Old 12-19-2010, 12:23 AM
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Join Date: Jul 2009
Location: OZ
Posts: 322
Re: custom barrel for .300 ultra

My factory 300 rum liked RL25 best with the 210 bergers and federal GM primers and H4831 with the 168 grainers with rem 9 1/2 primers,both of these shot 1/2 moa,i suggest you try different seating depths before you toss your barrel.Good Luck.
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  #6  
Old 12-19-2010, 12:48 AM
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Join Date: May 2008
Location: Sparks, Nevada
Posts: 162
Re: custom barrel for .300 ultra

My 300RUM with a 27" kreiger would not shoot the bergers to my satisfaction (just barely under MOA) with h1000, rl25, or retumbo. I switched to the 220g SMK 88g (I dont have my log book on me so I dont know coal but its just too the lands.) In one session using these bullets I was .3" and as far as im concerned done with my load developement for now.
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  #7  
Old 12-19-2010, 07:00 AM
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Join Date: Dec 2005
Location: Tucson Az
Posts: 1,399
Re: custom barrel for .300 ultra

I built a 300 RUM with a 27" lilja. I tried the Berger VLDs and moved on. This rifle shoots the following with approx 1/4 MOA out to a tested 550 yds. 168 sierra matchking, 180 and 200 gr accubond, and 168 TSX. Some rifles just don't like the VLD.
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