Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Hunting > Extreme Long Range Hunting & Shooting (ELR)

Extreme Long Range Hunting & Shooting (ELR) Over 1,000 Yds.


Reply

1000 yard problems.

 
LinkBack Thread Tools Search this Thread Display Modes
  #8  
Old 05-13-2012, 03:15 PM
Junior Member
 
Join Date: May 2012
Posts: 16
Re: 1000 yard problems.

@JeffVN

How do you keep the heat down on your gun then? Is your barrel the secret to it?
Reply With Quote
  #9  
Old 05-14-2012, 07:31 AM
Bronze Member
 
Join Date: Oct 2005
Location: NOVA
Posts: 96
Re: 1000 yard problems.

I'd agree the standard barrel is heating up.

I had the same problem with a 300WSM Savage with the sporter barrel trying to shoot F-class. First three or four right on, and then they fell out the bottom. Screwed in a heavier barrel and now the misses are only due to my lack of wind-reading ability.

A heavy barrel or more time between shots might be the only solutions.
__________________
There is no "overkill". There is only "open fire" and "I need to reload."
Reply With Quote
  #10  
Old 05-16-2012, 01:23 PM
Gold Member
 
Join Date: Oct 2007
Posts: 818
Re: 1000 yard problems.

I just happed to take a look at this thread....4' at 1K!!!. The first time I read it i preceved "four inches" at 1k...figured you were just braggin. It's not heat....it's stress...brought on by heat. I would think that you might benifit from a cryo treatment. It was mentioned in an earlier post that ...well.." as your barrel expands from the heat you get less pressure, and that means less velocity, which would cause it to consistantly drop low". Wrong....your BBL does not expand...it swells...the OD gets bigger AND the bore constricts..giving you MORE velocity, not less. I tend to heat things up with factory tubes..just because I don't really care about them...and have never seen anything like four feet at 1K., in any direction.

In 1K comp we purposely let things heat up to stabilize velocity....as things heat up, velocitys rise and the impacts rise...SLIGHTLY. It is not the temp of the ammo that does it....I lay a round on the loading ramp, and when I am ready to fire, I close the bolt and fire almost simultaniously (sp)..the ammo does not heat up...the FPS increase is from the swelling of the bbl....the outside dimeter gets bigger AND the bore constricts. I have seen it a million times when doing load development using a chrono. If you have stress in part of your tube, it will swell either more or less than the metal around it, causing the bbl to "bend".

Of course, this is my .02...take it for what it is worth.

Tod

Last edited by 4xforfun; 05-16-2012 at 01:55 PM.
Reply With Quote
  #11  
Old 05-17-2012, 10:01 PM
Silver Member
 
Join Date: Sep 2006
Posts: 154
Re: 1000 yard problems.

I would also agree with the heat issue, but I am also wondering how well does it shoot at a 100 yrds,and what kind of numbers are you getting out of your load, S.D. if your S.D. is not in the single digits this could also be part of your problem as well, if your 100 yard group throughs one low once in a while you could also have a load issue.I have a factory model 70 win that is a feather light and it will hold 1/2 moa at a 1000 shooting a 5 shot string then it needs to cool back down,
Reply With Quote
  #12  
Old 05-17-2012, 10:42 PM
Gold Member
 
Join Date: Jan 2011
Posts: 601
Re: 1000 yard problems.

Try it again but this time let it cool down between shots. Do that a few times. If the problem goes away go back and do it again without letting it cool down. If the problem shows back up you have your answer.
Reply With Quote
  #13  
Old 05-17-2012, 11:25 PM
Junior Member
 
Join Date: May 2012
Posts: 16
Re: 1000 yard problems.

Quote:
Originally Posted by 270winshort View Post
I would also agree with the heat issue, but I am also wondering how well does it shoot at a 100 yrds,and what kind of numbers are you getting out of your load, S.D. if your S.D. is not in the single digits this could also be part of your problem as well, if your 100 yard group throughs one low once in a while you could also have a load issue.I have a factory model 70 win that is a feather light and it will hold 1/2 moa at a 1000 shooting a 5 shot string then it needs to cool back down,
Wld be my S.D? It holds a sub zero group at 100 yards, ii can make all 3 in a group touch with it.
Reply With Quote
  #14  
Old 05-18-2012, 01:08 PM
Silver Member
 
Join Date: Sep 2006
Posts: 154
Re: 1000 yard problems.

Quote:
Originally Posted by Lancet View Post
Wld be my S.D? It holds a sub zero group at 100 yards, ii can make all 3 in a group touch with it.
S.D. stands for Standard Deviation, which is the average difference between muzzle velocity from shot to shot Example; 5 shot group shot 1 3125 fps
shot 2 3250 fps
shot 3 3200 fps
shot 4 3175 fps
shot 5 3165 fps
This would be an example of a load that has a large extreme spread 125 fps the s. d. on this load would be somewhere around 25 to 28 fps.

An example of good S.D. would be shot 1 3200 fps
shot 2 3220 fps
shot 3 3210 fps
shot 4 3218 fps
shot 5 3207 fps
In this example the extreme spread is only 20 fps which would give you a S.D. (or avaerage) of around 5 fps.

What this means is your load is tuned and it is going to be much more consistent, I always try to find a load that has an S.D. in the single digits(9 or less)

When shooting out past 500 yards this will make a differnce, your groups will be better, I would take a load with a low S.D. that shot a 5/8" group at a 100 yards over a load that shot a 1/4" group at a 100 yards with a high S.D.

Hopes this helps I am not good at putting Sh-- on paper there are others on here that could explain it better if you would like more info you can pm me and I can give you my phone #
Reply With Quote
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes


Similar Threads for: 1000 yard problems.
Thread Thread Starter Forum Replies Last Post
1000 yard 7mm mag redneck watchdog Rifles, Bullets, Barrels and Ballistics 13 03-03-2014 05:14 PM
1000 yard HG SP ewallace Specialty Handgun Hunting 13 01-19-2012 08:44 PM
300 WSM 1000 yard HG 308378 Guns For Sale 5 06-16-2010 05:29 PM
1000 Yard Gun gravedigger Specialty Handgun Hunting 6 01-28-2009 02:35 PM
7mm HV 1000 yard gun BountyHunter Guns For Sale 2 03-11-2003 05:42 PM

Current Poll
Where in the US do you live?
West of the Mississippi River - 60.11%
782 Votes
East of the Mississippi River - 37.59%
489 Votes
On the Mississippi River on a houseboat - 2.31%
30 Votes
Total Votes: 1,301
You may not vote on this poll.

All times are GMT -5. The time now is 11:00 PM.


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