Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Reloading

Reloading Techniques For Reloading


Reply

6 Dasher jump or lands?

 
LinkBack Thread Tools Display Modes
  #1  
Old 07-28-2013, 12:51 PM
Junior Member
 
Join Date: Mar 2012
Posts: 14
6 Dasher jump or lands?

Hi,

I shoot 95gr Bergers, I currently jump 0.040. This load shoots 1.5 at 600 yards.
This is a no turn, very tight neck with .002 neck tension.

What is best?

The start of ignition is most important, but with all factors equal. Is it more desireable to load against the lands, giving the powder more time to build up pressure and heat?
Or having a jump and giving the bullet an easier start and letting the bullet enter the rifling at a higher speed?

Thanks for the help.
Chrisjan
Reply With Quote
  #2  
Old 07-28-2013, 05:16 PM
Platinum Member
 
Join Date: Oct 2007
Location: Mountians of SW NC, near Asheville
Posts: 1,596
Re: 6 Dasher jump or lands?

"Thanks for the help."

The only help" anyone can honestly give you is to go test whatever you want to try, nothing about reloading for acccuracy is a given.

If you're getting 1.5" groups at 600 yards it's unlikely you're going to do better. And you won't even do that again if you get a few puffs of wind on the range.
Reply With Quote
  #3  
Old 07-28-2013, 06:18 PM
Platinum Member
 
Join Date: Aug 2003
Location: NC, oceanfront
Posts: 3,296
Re: 6 Dasher jump or lands?

+1 Boomtube
Whatever setting shoots the best -is best. It's not predictable, but has to be determined locally.

Why did you choose 40thou off? Was that determined to be best?
If not, what are the chances that is best?
I say low, but you may be luckier than I
Reply With Quote
  #4  
Old 07-28-2013, 10:37 PM
Junior Member
 
Join Date: Jun 2013
Posts: 10
Re: 6 Dasher jump or lands?

If you are getting a 1/4 moa at 600 I would not change a thing. If you insist on changing extend out in .010 increments until touching. Keeping in mind that 1 bullit diameter in the neck is necessery for proper alighnment and neck tenchion. Jamming into the grooves may cause overpressure with your current load.
Reply With Quote
  #5  
Old 07-29-2013, 09:40 AM
Junior Member
 
Join Date: Mar 2012
Posts: 14
Re: 6 Dasher jump or lands?

[Why did you choose 40thou off? Was that determined to be best?
If not, what are the chances that is best?
I say low, but you may be luckier than I[/QUOTE]

Hi Mikecr,

Due to magazine lenth limitations, I had to start at ,010 off the lands. I then worked away from the lands at ,004 incremints. At ,040 it is holding vertical very well.

It is just because on berger's website it is advised to try jump. But most posts on bergers seems to suggest close or in the lands.
Reply With Quote
  #6  
Old 07-29-2013, 11:19 AM
Platinum Member
 
Join Date: Aug 2003
Location: NC, oceanfront
Posts: 3,296
Re: 6 Dasher jump or lands?

I'm glad you tested, but now I gotta ask:
When you say "This load shoots 1.5 at 600 yards" are you talking about grouping, accuracy, or only a portion of them(vertical)?
Reply With Quote
  #7  
Old 07-29-2013, 11:49 PM
Junior Member
 
Join Date: Mar 2012
Posts: 14
Re: 6 Dasher jump or lands?

Quote:
Originally Posted by Mikecr View Post
I'm glad you tested, but now I gotta ask:
When you say "This load shoots 1.5 at 600 yards" are you talking about grouping, accuracy, or only a portion of them(vertical)?
Hi,

This is on a 3 shot group in perfect weather, no wind at all and just after sunrise. So no mirrages. Total vertical is only half an inch
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes



All times are GMT -5. The time now is 10:05 PM.


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