Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Rifles, Bullets, Barrels and Ballistics


Reply

195 grain 7mm Berger - How Much Cartridge Will it Need?

 
LinkBack Thread Tools Display Modes
  #1  
Old 12-10-2013, 08:35 PM
Silver Member
 
Join Date: Nov 2008
Location: Eastern Montana
Posts: 265
195 grain 7mm Berger - How Much Cartridge Will it Need?

I was thinking of a 284 or a 280 AI to stay with a standard bolt face. Any thoughts on whether either of these have enough horsepower to take advantage of these bullets?

Thanks
Reply With Quote
  #2  
Old 12-10-2013, 09:27 PM
Silver Member
 
Join Date: Feb 2012
Location: eastern,wa
Posts: 421
Re: 195 grain 7mm Berger - How Much Cartridge Will it Need?

I am not real familiar with the 280's, but a quick look at some reloading info on line you could push them, but I don't think the 280 or ai version would be ideal. I have been running the 180 berger at 3170 and am hoping when the 195 decides to show its face i will be able to do 3050 or so out of the 7-300 win and if you ask broz what he would run those out of he will say the 7-300 win
Reply With Quote
  #3  
Old 12-10-2013, 09:43 PM
Platinum Member
 
Join Date: Dec 2005
Location: Tucson Az
Posts: 1,096
Re: 195 grain 7mm Berger - How Much Cartridge Will it Need?

On the other hand the G7 BC of .406 helps carry this bullet.

I crunched some JBM numbers for 4000 ft ( the elevation I usually shoot) with the bullet lumbering along at 2600 fps. It had 8.8 inches of drift at 500 yds in a 10 mph crosswind. That has it beating the wind drift of my 257 Weatherby with 110 accubonds going a bit over 3700 fps by 1.6". Energy is not great but it is just under 2000 ft/lb

At 975 yds it still is moving at 1903 fps which might be the threshold of reliable expansion. If 2000 fps is the borderline it is doing that at 825 yds.

If you were to build a long barrel with enough twist the 195 might do quite well. Sure you would be doing some turret twisting but you wouldn't have too many issues wind drift.

Who knows, with the right powder the 195 might even go 2700 fps or more from a 30" barrel and the 280 or 284 win.
Reply With Quote
  #4  
Old 12-10-2013, 10:14 PM
Platinum Member
 
Join Date: Nov 2008
Location: SW Montana
Posts: 4,259
Re: 195 grain 7mm Berger - How Much Cartridge Will it Need?

I'm thinking that a 7 LRM or the 7-300 Win will be ideal, maybe a healthy dose of R33 under it
__________________
High Fence, Low Fence, Stuck in the Fence, if I can Tag it and Eat it, it's Hunting!
"Pain is weakness leaving your body"
Reply With Quote
  #5  
Old 12-10-2013, 10:22 PM
Bronze Member
 
Join Date: Oct 2013
Location: Texas
Posts: 99
Re: 195 grain 7mm Berger - How Much Cartridge Will it Need?

So do you guys thin a 1:9 would stabilize it or would the twist have to be more aggressive than that?
__________________
Army Field Artillery
Reply With Quote
  #6  
Old 12-10-2013, 10:28 PM
Silver Member
 
Join Date: Mar 2012
Location: Bozeangeles
Posts: 158
Re: 195 grain 7mm Berger - How Much Cartridge Will it Need?

As soon as I can get my grubby little mitts on some I'll let you know if they work out of a 7saum with a 3 groove 9 twist benchmark ;)
Reply With Quote
  #7  
Old 12-10-2013, 10:33 PM
Edd Edd is online now
Gold Member
 
Join Date: Jan 2011
Location: Tulsa
Posts: 876
Re: 195 grain 7mm Berger - How Much Cartridge Will it Need?

Quote:
Originally Posted by joeycoates View Post
So do you guys thin a 1:9 would stabilize it or would the twist have to be more aggressive than that?
Berger says 8.5" minimum.
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Current Poll
Spot & Stalk or Ambush For Western Deer?
MOSTLY - Spot & Stalk - 74.16%
930 Votes
MOSTLY - Ambush - 25.84%
324 Votes
Total Votes: 1,254
You may not vote on this poll.

All times are GMT -5. The time now is 10:48 PM.


Powered by vBulletin ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Management Powered by vBadvanced CMPS
All content ©2010-2014 Long Range Hunting, LLC