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7mm berger, which one?

 
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  #8  
Old 11-28-2008, 10:49 AM
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Join Date: Mar 2007
Location: Dallas,OR
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Re: 7mm berger, which one?

Hello, Thanks Montana Rifleman for the info. I too inquired about expansion velocities, I'm with Forester, I expected a lower minimum. My reason for the original post was to hopefully hear from the more experienced folks here on the terminal performance of the various high bc 7mm bullets at 1800fps. I may just have to find a different herd to hunt, I hiked over 100 miles this summer trying to get a shooting vantage point below 950-1000yds, but no luck.
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  #9  
Old 11-28-2008, 11:30 AM
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Join Date: May 2008
Location: South of Canada and North of Wyoming
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Re: 7mm berger, which one?

Quote:
Quote:
Originally Posted by moombaskier View Post
Hello, Thanks Montana Rifleman for the info. I too inquired about expansion velocities, I'm with Forester, I expected a lower minimum. My reason for the original post was to hopefully hear from the more experienced folks here on the terminal performance of the various high bc 7mm bullets at 1800fps. I may just have to find a different herd to hunt, I hiked over 100 miles this summer trying to get a shooting vantage point below 950-1000yds, but no luck.
If you can get 3100 out of your rifle with a 160, then you should easily be able to get 2950 with a 180. When I run a 180 VLD with a .684 BC @ 2950 @ 3000' elev, I get a vel of 1814 @ 1000 yds.

Also, as I mentioned earlier, the AB's appear to open at slower than advertised velocities at LR. We had a discusion about this on another thread and i concluded that it *might* have to do with heat generated to the jacket over an extended TOF for a LR shot. Whatever the reason, the AB's in a couple of instances opened at significantly lower velocities.

You might try the VLDs on coyotes or antelope at 1000 yds and see what happens?
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  #10  
Old 11-28-2008, 02:01 PM
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Join Date: Feb 2008
Location: Star, ID
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Re: 7mm berger, which one?

First, I'll state that I have had good luck recently with the 168 berger using Retumbo powder, getting just over 3000fps out of a stock Sako 75 with a 24.5" barrel. I killed my buck with it this year, but only at 350 yards.

One thing I would do is check to see if you think your magazing can handle the LONG length of the 180 grain high BC bullets or even the 168's. I think the 180's would be better if you can fit them and get the requisite velocity and accuracy, but I think the numbers will support the 168's, based on what you said you are getting now. I assume you have a 26" barrel as mine is only 24.5. Retumbo powder will add a little velocity and you should have the velocity and energy right at 1000 yards if you can do your part. You will need a lot of practice and perfect conditions as you know, just because your gun can do doesn't mean you should....unless you know you're ready.

Good luck trying!
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