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building my first long range rifle

 
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  #1  
Old 12-28-2010, 08:53 PM
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Join Date: Dec 2010
Location: Yeso New Mexico
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building my first long range rifle

Ive decided to build myself a long range rifle out of an old pre64 model 70 I have in 264 win mag. Ive decided on chambering the gun in 7mm rem mag. What I wanting to know is whos barrel I should use and the best twist for long range accuracy. This is my first attempt at building a gun for shooting long ranges (out to 1000) so any advice would be great.
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  #2  
Old 12-28-2010, 09:05 PM
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Re: building my first long range rifle

Brux barrel, 9 twist for 168 bullets.
8.7 for the 180 bergers.
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  #3  
Old 12-29-2010, 12:14 AM
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Re: building my first long range rifle

7 mag is not really a good case to start with. It doesn't hold enough powder for long barrels and the slowest powders. You are better off with something like a 7STW or even a 7 ultra mag. The 7 mag will be blowing the primers out and still be a couple hundred FPS behind it's bigger brothers.
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.270 Ackley improved 29 inch 1.250 dia. target barrel 7mm STW 28 inch 1.250 target barrel. I also love my .458 mag for varmints and the biggest game in the world.
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Old 12-29-2010, 11:51 AM
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Re: building my first long range rifle

Why not stay with the .264 Win Mag.? My buddy has an improved (fire formed case to hold more powder). The very first time he shot 1,000 yd. bench rest he came in second place with a 6" group shooting 140 gr. Bergers I think. Hadn't even worked up an accuracy load yet. A very flat shooting and accurate rifle.

joseph
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Old 12-29-2010, 12:45 PM
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Re: building my first long range rifle

Don't be easily fooled. The 7Rem Mag will do ya just fine. There sure seems to be a push to the RUM and STW. The 7mag has been shooting 1000 yards just fine since the time of its birth. I would recommend a little longer barrel. Something in the neighborhood of 27-28 inches will fit the bill nicely. You will be running the 168 grain Bergers to over 3000 FPS and have ample energy for even Elk to 1000 yards if you care to. There is a reason that these long range turnkey systems are chambering their rifles in the 7mm Rem. It is because it works. Sure the RUM and the STW will get you there faster, but it comes at quite a price too.
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Old 12-29-2010, 12:53 PM
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Re: building my first long range rifle

Yes, I used a 7mm for years and really thought that i had something. but when you pull out the Chronograph lots of 7mag loads were very optimistic. When I bought my 7STW i was so impressed I would NOT ever let a friend buy a 7 mag. Just like the I've got to have a weatherby because it shoots so much faster. But in reality the reloading books don't give out the level playing field of comparing 22 & 24 inch barrels compared to the Weatherby 26 inch

The chrono doesn't lie! I'm also big on long barrels and slow powders.
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.270 Ackley improved 29 inch 1.250 dia. target barrel 7mm STW 28 inch 1.250 target barrel. I also love my .458 mag for varmints and the biggest game in the world.

Last edited by budlight; 12-29-2010 at 02:51 PM.
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  #7  
Old 12-29-2010, 02:42 PM
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Re: building my first long range rifle

Don't alter anything. The Pre-64 Win is a highly sought after collector's rifle that is worth a good coin to a reputable Winchester collector. Just a thought, may want to reconsider building on that action and buying a new one to build on. They are hard to come by now days.

Tank
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