Long Range Hunting Online Magazine


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


Reply

VELOCITY LOSS QUESTION - FOR FUN

 
LinkBack Thread Tools Display Modes
  #1  
Old 01-30-2003, 03:24 PM
Platinum Member
 
Join Date: May 2001
Location: Sask. Canada
Posts: 2,410
VELOCITY LOSS QUESTION - FOR FUN

You take a brand new Winchester M-70 in .308 Win (24 inch barrel) and chronograph ten shots with Federal 168 match hollowpoints.

Velocities average 2674.

Ten inches of the barrel is cut off - down to 14 inches and recrowned - and the velocities are rechecked.

Lets see who can guess what the velocities would average. I have actual lab data of such a test - who can guess the closest?

Will give the answer after we have a decent response.
Reply With Quote
  #2  
Old 01-30-2003, 03:48 PM
Platinum Member
 
Join Date: Jun 2001
Location: Palmer, Alaska
Posts: 2,539
Re: VELOCITY LOSS QUESTION - FOR FUN

Ian, what powder...Varget?

I just checked some loads in my 14" barreled Striker with Varget and 165 SGK's. I thought it sayed 2550 but my dad pointed out that I needed to learn to read [img]images/icons/grin.gif[/img] ... it was 2250! I think it was 44gr. My dad said he was getting 2700 fps in it with 748 and 168 SMK, the same as in his 24" rem 700 VSS. I'm sure you found the same thing too. [img]images/icons/wink.gif[/img] They seem to do real well at holding speed in super short barrels for sure.

I'll take a wild guess and say it was 2620?
__________________
Brent Moffitt
Reply With Quote
  #3  
Old 01-30-2003, 04:22 PM
Junior Member
 
Join Date: Feb 2002
Location: bellefonte pa
Posts: 24
Re: VELOCITY LOSS QUESTION - FOR FUN

MY ANSWER TO THIS PROBLEM IS "2189FPS"
Reply With Quote
  #4  
Old 01-30-2003, 05:08 PM
Platinum Member
 
Join Date: May 2001
Location: Sask. Canada
Posts: 2,410
Re: VELOCITY LOSS QUESTION - FOR FUN

Brent,
Factory Federal match ammo, it is loaded with 4064 as a matter of fact.
You sure you typed that correctly!?!?!?
Reply With Quote
  #5  
Old 01-30-2003, 05:20 PM
Platinum Member
 
Join Date: May 2001
Posts: 2,369
Re: VELOCITY LOSS QUESTION - FOR FUN

2425 or 2426 (I feel pretty confident [img]images/icons/wink.gif[/img])
Reply With Quote
  #6  
Old 01-30-2003, 06:35 PM
Platinum Member
 
Join Date: Jun 2001
Location: Palmer, Alaska
Posts: 2,539
Re: VELOCITY LOSS QUESTION - FOR FUN

My dads crony sound like it's giving "fony crony" numbers again. [img]images/icons/grin.gif[/img]

It would not surprise me if it was 2350-80 if you are using the Fed load which I believe is about 43.4gr of 4064. It goes about 2594 in my sons 20" tube. Dave could be right on though. The low number in my last test makes me want to say a little lower though.

The 2620 guess is based on my "dads" observations in the Striker, probably at 47gr too, not exactly what I found with the load I shot though. I think this 44gr load just tested in the Striker was going about 2580 in the 20" tube.
__________________
Brent Moffitt
Reply With Quote
  #7  
Old 01-30-2003, 08:22 PM
 
Posts: n/a
Re: VELOCITY LOSS QUESTION - FOR FUN

2344fps
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: VELOCITY LOSS QUESTION - FOR FUN
Thread Thread Starter Forum Replies Last Post
Major velocity loss Ultramag45 Rifles, Bullets, Barrels and Ballistics 6 11-12-2010 05:35 PM
220 swift velocity loss?? paste Rifles, Bullets, Barrels and Ballistics 3 10-12-2009 05:06 AM
220 swift velocity loss?? paste Reloading 0 10-11-2009 11:15 AM
Temp related velocity loss Jimm Reloading 10 12-09-2005 09:49 PM
Velocity Loss with 26" Barrel & 7mm STW Rifles, Bullets, Barrels and Ballistics 3 12-29-2002 03:51 PM

Current Poll
Where in the US do you live?
West of the Mississippi River - 60.82%
894 Votes
East of the Mississippi River - 36.87%
542 Votes
On the Mississippi River on a houseboat - 2.31%
34 Votes
Total Votes: 1,470
You may not vote on this poll.

All times are GMT -5. The time now is 10:53 AM.


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