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300 win mag 210 grain bergers

 
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  #1  
Old 10-03-2011, 08:17 PM
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300 win mag 210 grain bergers

Im thinking about building a 300 win mag. What barrel length and twist are you guys using for 210 grain bergers? What speeds are you guys getting with the 210 grain bergers and what is your over all length? My mag box on the action I am going to use is 3.610 oal. Will that be long enough? Thanks for any help.
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Old 10-03-2011, 09:20 PM
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Re: 300 win mag 210 grain bergers

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Originally Posted by model70rum View Post
Im thinking about building a 300 win mag. What barrel length and twist are you guys using for 210 grain bergers? What speeds are you guys getting with the 210 grain bergers and what is your over all length? My mag box on the action I am going to use is 3.610 oal. Will that be long enough? Thanks for any help.
You should be fine. Mine are at 3.550" OAL. They are seated -.040" of the lans. This is with a " Tactical Match" reamer that has a bit longer throat than a std. 300 win reamer.

With a 28" Broughton 5C 1 in10 twist I am getting 2995 MV out of Lapua brass. That is with a Defiance action. My son gets 2916 with a little lesser charge and again a 5C 28" Broughton. This is with H-1000 and Fed 215's under a 210 Berger.

The 300 win is an awesome rifle. I think you will be pleased with what you get.

Jeff
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Old 10-03-2011, 09:41 PM
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Re: 300 win mag 210 grain bergers

im hoping to start a build to shortly and was afraid of not being able to achieve 2900 fps with 210 bergers. It seems like a lot of people are so hopefully i can get it
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Old 10-03-2011, 09:50 PM
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Re: 300 win mag 210 grain bergers

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Originally Posted by matt_3479 View Post
im hoping to start a build to shortly and was afraid of not being able to achieve 2900 fps with 210 bergers. It seems like a lot of people are so hopefully i can get it
Very doable with H-1000 and a 28" tube. Brass will make a difference too. We get best Velocity from Lapua brass, but it is no longer made. You may give up a little velocity with RWS because is has less case volume and pressure will show up sooner. But we got 2900 from WW brass too. WW just is notquite up to the quality of RWS so the prep on the WW will need ore attention.

Jeff
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Old 10-03-2011, 09:52 PM
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Re: 300 win mag 210 grain bergers

Here is a link to what I built. But please note I tossed the Kreiger after 75 rounds and replaced it with a Broughton 5C in the Sendero contour 1 in 10 twist. The first tube just would not cut it as far as accuracy was concerned.

My New 300 Win Build

Jeff
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Last edited by Broz; 10-04-2011 at 09:10 AM.
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Old 10-04-2011, 09:29 AM
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Re: 300 win mag 210 grain bergers

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Originally Posted by Broz View Post
Here is a link to what I built. But please note I tossed the Kreiger after 75 rounds and replaced it with a Broughton 5C in the Sendero contour 1 in 10 twist. The first tube just would not cut it as far as accuracy was concerned.

My New 300 Win Build

Jeff
Those shots at the steel at 1000 are with the 5c then? All the dead animals are with what barrel? When did you notice the Kreiger wasn't working out? What was the cause of the problem with the Kreiger? Just really curious as Kreiger is generally a highly regarded accurate barrel.

Tank
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Old 10-04-2011, 10:01 AM
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Re: 300 win mag 210 grain bergers

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Originally Posted by liltank View Post
Those shots at the steel at 1000 are with the 5c then? All the dead animals are with what barrel? When did you notice the Kreiger wasn't working out? What was the cause of the problem with the Kreiger? Just really curious as Kreiger is generally a highly regarded accurate barrel.

Tank
Tank, Here is the story. I tried to alter my post to change the barrel spec many times. But for some reason ( even though I am logged in) I have no edit button as an option.

First, I have Kreiger barrels that shoot very well. I am of the belief many barrel makers make great barrels. But anyone can make a bad one too.

So here is the deal. As soon as the break in was done I started to fine tune loads. I spent the next 75 rounds doing this. 4 or 5 powders, full rifle inspection of bedding, mounts and even added a 3rd NF ring to make sure all was not moving. Pulled the NXS off my 338 LM and replaced the new NXS I had on the 300. Many seating depths, two different bullets. Nothing made one bit of difference. The rifle was a 1 and 1/2 MOA rifle. Heck every factory Sendero or Accumark I have owned was better than that. All this was also done in NEW Lapua 300 win brass too. I called Kreiger to explain my problem and ask for suggestions and also ask about the possibility of if I should look into a 5 or 6 land barrel to help. They told me that "4 land rifling is just what we do" They had no offers of how to help the issue and said another tube would be 10 to 12 weeks and no offer of a replacment was made. I didn't press the issue as at that point I had no proof yet of what was truely wrong. So I said enough is enough. I called Broughton and ordered the new 5C barrel. When it came in it was installed by the same smith, who did offer to do the replacment work free. I split it with him as I brought the compoenents to him for the build. So I felt it was in no way his fault. I took it home with the new Broughton, broke it in, went back to my go to load with 210 Bergers and the rifle has shot 1/2 moa or better to 1000 yards every since.

So yes, all the steel pics and the game has been taken with the Broughton barrel. I need to change the barrel specs in that thread but will have to get assistance from the mods I guess.

I am not trying to bad mouth Kreiger. That is why I never added this to the build story. I have some of their tubes that are great shooters. But when no hand was extended to help at the time of need with my problem, and after the amount I had spent in the build, ammo time and trouble. I have bought my last Kreiger tube.

Jeff
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