Long Range Hunting Online Magazine


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


Reply

7MM Velocities

 
LinkBack Thread Tools Display Modes
  #1  
Old 07-23-2009, 08:03 PM
Silver Member
 
Join Date: Oct 2007
Location: Tillamook, Oregon
Posts: 381
7MM Velocities

Hello guys, just looking for a little info. My next long range hunting rifle project will probably be a 7mm STW of a 7mm Rem Ultra. I will most likely run the 168 Berger VLD's exclusively. The barrel will be at least 28", maybe more to get the most efficient burn and velocity potential. What are your velocity experiences running a 28"+ barrel with the 168 VLD's in either caliber? Also have heard the RUM is a barrel burner and loads may have to be reduced as throat wears, if this is true, that won't work. I am basically looking for high velocity in the 7mm caliber to keep that berger at 1800 fps as far out as I can, but I shoot a lot and the barrel will have to last too! Thanks
Reply With Quote
  #2  
Old 07-23-2009, 09:35 PM
Silver Member
 
Join Date: Jun 2008
Location: Jackson Ms
Posts: 314
Re: 7MM Velocities

Not exactally what you asked for but here is some info to help you get started.

My 7mmRem Mag with a 26 inch Shilen shoots the 168 pretty good.

According to the iPhone Ballist FTE app using the G7 drag model my load keeps 1800ft/lbs out to 1200 yrds. That is a MV of about 3030.

BTW the drop is 294 inches or 24.5 ft. wow. Not a real bad barrel burner and only about 66 grains of poweder as well.
Reply With Quote
  #3  
Old 07-23-2009, 11:09 PM
Silver Member
 
Join Date: Oct 2007
Location: Tillamook, Oregon
Posts: 381
Re: 7MM Velocities

Quote:
Originally Posted by Limbic View Post
Not exactally what you asked for but here is some info to help you get started.

My 7mmRem Mag with a 26 inch Shilen shoots the 168 pretty good.

According to the iPhone Ballist FTE app using the G7 drag model my load keeps 1800ft/lbs out to 1200 yrds. That is a MV of about 3030.

BTW the drop is 294 inches or 24.5 ft. wow. Not a real bad barrel burner and only about 66 grains of poweder as well.

Thanks for the reply limbic! WOW, are you sure that data is correct? JBM shows the 168 at 3,030 with the G7 litz as follows: 1,800 fps should be right at 910 yards and 1,800 ft/lbs at about 585 yards and the drop at 1,200 from a 100 yard zero should be 407.6 inches! Have you shot those kind of distances along with your program to verify it's accuracy? Just curious, thanks!
Reply With Quote
  #4  
Old 07-23-2009, 11:55 PM
Platinum Member
 
Join Date: Jan 2007
Location: MS
Posts: 1,652
Re: 7MM Velocities

Hmmm velocity and longevity.....seem pretty mutually exclusive. I am not sure your going to get what your wanting, gotta be a trade off somewhere. Just get the baddest hotrod you can find and stock up on barrels
__________________
I admit that I know just enough to be dangerous.....but dangerous at ever extending distances.
Reply With Quote
  #5  
Old 07-24-2009, 12:04 AM
Bronze Member
 
Join Date: Jan 2009
Location: N. Colorado
Posts: 33
Re: 7MM Velocities

Tumbleweed,
If I use JBM for where I live at in Colorado at 5000 feet asl, given the above info, then 1800fps and 294 in drop is correct for 1120 yards. So it matters what altitude you live at as well as temperature and pressure used. I guess you live at sea level right on the shoreline (since you used 0 feet for altitude to get 910 yards)?

Last edited by freelunch; 07-24-2009 at 12:08 AM.
Reply With Quote
  #6  
Old 07-24-2009, 01:19 AM
Silver Member
 
Join Date: Oct 2007
Location: Tillamook, Oregon
Posts: 381
Re: 7MM Velocities

Quote:
Originally Posted by freelunch View Post
Tumbleweed,
If I use JBM for where I live at in Colorado at 5000 feet asl, given the above info, then 1800fps and 294 in drop is correct for 1120 yards. So it matters what altitude you live at as well as temperature and pressure used. I guess you live at sea level right on the shoreline (since you used 0 feet for altitude to get 910 yards)?
You're Right, I stand corrected! Yes, we are at sea level, guess that high altitute can be a real advantage. The highest we get when elk hunting is about 2,500 feet.
Reply With Quote
  #7  
Old 07-24-2009, 08:47 AM
Silver Member
 
Join Date: Aug 2008
Location: washington utah
Posts: 177
Re: 7MM Velocities

7mm tejas (7mm rum improved) 180 gn berger 3400 fps 2500 rounds and counting says the builder. I will be builing one as a switch barrel for my 375 tejas.
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: 7MM Velocities
Thread Thread Starter Forum Replies Last Post
7 mm wsm velocities jmason Reloading 4 10-11-2010 10:15 PM
7mm rum 7mm rm 180 vld velocities linksmechanic Long Range Hunting & Shooting 14 11-24-2009 10:25 PM
.243 AI velocities Jimm Reloading 5 08-11-2008 08:48 AM
Velocities please 4ked Horn Rifles, Bullets, Barrels and Ballistics 0 10-26-2004 09:45 PM
6.5-284 velocities 10X Rifles, Bullets, Barrels and Ballistics 10 10-24-2001 06:13 AM

Current Poll
Do you watch outdoor shows live or by recording them?
Always recorded - 13.10%
112 Votes
Mostly recorded - 24.21%
207 Votes
Sometimes recorded - 15.09%
129 Votes
Rarely or never recorded - 47.60%
407 Votes
Total Votes: 855
You may not vote on this poll.

All times are GMT -5. The time now is 07:50 PM.


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