Long Range Hunting Online Magazine


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

Reloading Techniques For Reloading


Reply

Ladder test works!

 
LinkBack Thread Tools Display Modes
  #1  
Old 07-11-2005, 04:38 PM
Silver Member
 
Join Date: Mar 2004
Location: New Mexico
Posts: 244
Ladder test works!

Many thanks to Abinok and the others for turning me on to the ladder test. Had to develope a load for my 257 STW using Ramshot Magnum and 110gn Accubond. Ladder tested 20 rounds at 400yds. Sure enough, two distinct sweet spots at low (3300fps) and high (3500 fps). Chose the middle load of the higher sweet spot and sure enough, shot a 1/2 moa group at 100 yds (first four in .290")at 3490fps. Load developement in less than 40 rnds! [img]/ubbthreads/images/graemlins/grin.gif[/img] Gotta love it, especially with a barrel burner like the 257 STW.
__________________
Become sheep and the wolves will eat you!
Reply With Quote
  #2  
Old 07-11-2005, 05:00 PM
Platinum Member
 
Join Date: Jun 2007
Posts: 1,515
Re: Ladder test works!

Cool beans.

I'm looking forward to trying it myself in the future.

So I take it that you shot a 1/2 MOA <u>5 shot group</u>? Good deal. The les shots for load development the more shots for critters.
__________________
GRAVITY. It's not just a good idea. It's the LAW!
Reply With Quote
  #3  
Old 07-11-2005, 08:52 PM
Silver Member
 
Join Date: Mar 2004
Location: New Mexico
Posts: 244
Re: Ladder test works!

Yes thats correct, five shots in .590".
__________________
Become sheep and the wolves will eat you!
Reply With Quote
  #4  
Old 07-11-2005, 09:01 PM
Silver Member
 
Join Date: Apr 2004
Location: Northern California
Posts: 180
Re: Ladder test works!

I am curious if you could BRIEFLY explain what a ladder test is? I think that I am already doing this sort of thing without knowing that it was a common procedure but just to be sure, what is it?

Thanks.
__________________
I shoot 1/4 inch groups at a 1000 yards. That is...till my second shot.
Reply With Quote
  #5  
Old 07-11-2005, 09:27 PM
Gold Member
 
Join Date: Nov 2004
Posts: 878
Re: Ladder test works!

Glad to hear it worked for you 257. Next time you see somebody at the range knee deep in brass, with a frustrated look on his face, be sure to share!

7mm, the short description would be shooting a series of rounds, each with different powder charges loaded in increasing incriments of charge wt in an attempt to find vibration nodes that minimize the dispersion caused by varying charge weights, while allowing an accurate, repeatable load to be found for a rifle, with a minimum round count being fired. Ive got a document that does a passable job of explaining the ladder test. If you would like a copy, id be happy to email it to you.
Reply With Quote
  #6  
Old 07-11-2005, 09:33 PM
Silver Member
 
Join Date: Mar 2004
Location: New Mexico
Posts: 244
Re: Ladder test works!

7mmagman, check this out http://longrangehunting.com/ubbthrea...p;page=8#67743
__________________
Become sheep and the wolves will eat you!
Reply With Quote
  #7  
Old 07-11-2005, 09:40 PM
Silver Member
 
Join Date: Mar 2004
Location: New Mexico
Posts: 244
Re: Ladder test works!

Abinok, I edited my post above with a picture of the results of the test, but I did not have any pictures of the ladder target. I wish I did because it was different than yours. Even at 400yds, the shots did not climb vertically very much. What they did do, is that they would be very erratic and then they would cluster, than get erratic again and cluster again. Out of the 20 shots, there were two distinct clusters at two different velocities. I chose the faster of the two clusters and then picked a load somewhere in the middle, which gave me the group in my previous post. All in about 27 total shots! I think at these distances, the 257 STW is shooting so fast/flat that there was not much vertical change.
__________________
Become sheep and the wolves will eat you!
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: Ladder test works!
Thread Thread Starter Forum Replies Last Post
OCW & Ladder Test? sharpshooterbr Reloading 4 08-30-2006 07:51 AM
Ladder test drags Rifles, Bullets, Barrels and Ballistics 1 07-16-2006 01:25 PM
My ladder test coupalr Reloading 14 05-22-2006 07:12 PM
ladder test ?'s Ridge Runner Reloading 2 05-18-2006 08:25 PM
Ladder Test devildoc Reloading 13 04-27-2006 08:47 PM


All times are GMT -5. The time now is 08:20 PM.


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