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my new 7mmx300win

 
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  #15  
Old 09-18-2013, 10:52 PM
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Location: Ashflat, AR
Posts: 385
Re: my new 7mmx300win

Thanks Rocco! I been meaning to talk to you about yours. I had an interesting test with Reloader 33 today...



i'm not going to claim the velocity that I have in shooter to get it to match this drop but if some of yall can just double check it with other programs that would be awesome

here is a video of my buddy marc shooting one of my 150gr NBT loads at 800, you can see the large target at the top of the screen, the metal plate pictured above hangs in the top left corner of the larger target.

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Weatherby Vanguard 277 Magnum (awaiting assembly)
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Savage LRH 6.5x284
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  #16  
Old 09-19-2013, 04:16 PM
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Re: my new 7mmx300win

What is your scope height ,are you shooting the 150nbt and what is the adjustment with a 200yd zero to be on at 800.
I'll run some numbers on my program.
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  #17  
Old 09-19-2013, 05:27 PM
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Location: Ashflat, AR
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Re: my new 7mmx300win

Scope height 1.85"
180gr berger target .674 G1
220y zero
12 moa up correction
510ft elevation
75* F temp
Humidity 35%
Baro 30.05
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Savage LRH 6.5x284
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  #18  
Old 09-19-2013, 06:05 PM
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Re: my new 7mmx300win

I calculated 3270 fps! That's awesome for the 180 s. That's more than a 300 win usually sends 180s down range!
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  #19  
Old 09-19-2013, 08:01 PM
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Re: my new 7mmx300win

With a sight height of 1.9 because Bulletflight won't let me input 1.85 I get 3250 so that 3270 should be real close. This is what happens when you run a .284 180gr vld out of a 300win case! A thing of beauty!
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  #20  
Old 09-19-2013, 08:13 PM
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Join Date: Jul 2010
Location: South FL
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Re: my new 7mmx300win

Quote:
Originally Posted by shortpants View Post
With a sight height of 1.9 because Bulletflight won't let me input 1.85 I get 3250 so that 3270 should be real close. This is what happens when you run a .284 180gr vld out of a 300win case! A thing of beauty!
Indeed, this type of 7-300 performance is exactly why I decided to do my own variation of same (Valkyrie). Can't wait to get my barrel from CBI. Already been waiting 10 weeks or so.
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  #21  
Old 09-19-2013, 08:30 PM
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Join Date: Nov 2010
Location: Ashflat, AR
Posts: 385
Re: my new 7mmx300win

Quote:
Originally Posted by RockZ View Post
I calculated 3270 fps! That's awesome for the 180 s. That's more than a 300 win usually sends 180s down range!
I am running 3250 fps in shooter. Thought maybe yesterday was a fluke so this evening I loaded up 5 more at 82gr dialed the scope back up 12 moa. The light was fading pretty quick so I kinda hurried my shots. Like I shot all 5 in about 2 minutes. Wasn't really shooting for group as much as I was shooting just for vertical stringing at 800 yards to check the SD of this load. Here was the result.

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Weatherby Vanguard 277 Magnum (awaiting assembly)
Weatherby Vanguard 257wby
Savage LRH 6.5x284
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