ladder testing

ladder testing

This is a discussion on ladder testing within the Cartridges & Calibers forums, part of the Sniping Related category; I have recently had GA Precision build my Model 70 in 300WSM with a Krieger barrel that has a 1-10 rate. I just did the ...

Page 1 of 2 12 LastLast
Results 1 to 10 of 11

Thread: ladder testing

  1. #1
    Member dknight1979's Avatar
    Join Date
    Jun 2013
    Location
    Janesville WI.
    Posts
    30

    Question ladder testing

    I have recently had GA Precision build my Model 70 in 300WSM with a Krieger barrel that has a 1-10 rate. I just did the first ladder test with it at 300yds and I my results were kind of confusing. I was expecting them to climb up the paper. But they didn't, they stayed in a 4" group. The Chronograph said that each round was increasing in speed. 2789 to 3030fps with 10 shoots in 1/2 grain increments. It was 27 F with a 30.20pressure and 59% humidity @900ft on that day. Will I get more "defining" results if it was warmer or do I just need to go out to say 5 or 600yds? If anyone has any input or suggestions I would greatly appreciate it?

  2. #2
    Member Darkside-Six's Avatar
    Join Date
    Oct 2013
    Location
    Grand Rapids, MI
    Posts
    58
    You'd get similar results if it was warmer. It sounds like you may need to take it out farther to around 500 so those shots open up more.
    "I will never explain myself to a man who rises and sleeps under the blanket of freedom that I provided, then questions the manner in which I provide it"

  3. #3
    Sponsors Orkan's Avatar
    Join Date
    Aug 2006
    Posts
    6,268
    The more rigid your barrel is, the less value a ladder test will have.

    One of the many reasons I am an advocate of OCW instead of audette ladder testing.

  4. Remove Advertisements
    SniperForums.com
    Advertisements
     

  5. #4
    Member dknight1979's Avatar
    Join Date
    Jun 2013
    Location
    Janesville WI.
    Posts
    30
    I not familiar with OCW?

  6. #5
    Sponsors Orkan's Avatar
    Join Date
    Aug 2006
    Posts
    6,268
    OCW Overview - Dan Newberry's OCW Load Development System

    Dan's an awesome guy, and the method outlined there is quite excellent. He needs to update his website to a better format, as it's legendarily bad... but the content is good!

    I have an OCW worksheet databook page if you're interested.
    Primal Rights ? View topic - Databook Pages

  7. #6
    Member dknight1979's Avatar
    Join Date
    Jun 2013
    Location
    Janesville WI.
    Posts
    30
    So are you saying that if you have a stiff barrel you won't get "tuning nodes"?

  8. #7
    Member dknight1979's Avatar
    Join Date
    Jun 2013
    Location
    Janesville WI.
    Posts
    30
    Thank you so much for the info, I never heard of it "OCW". I'll read it over and check it out.

  9. #8
    Senior Member deadshot2's Avatar
    Join Date
    Nov 2012
    Location
    Upper Left Corner
    Posts
    4,851
    Quote Originally Posted by dknight1979 View Post
    So are you saying that if you have a stiff barrel you won't get "tuning nodes"?

    They'll still be there but will be hard to pick out at shorter test ranges due to the fact that the nodes will much wider. If you do your ladder test with a heavy (stiff) barrel at 300 yards, and it looks like all the shots are grouping together, you may have to move out farther (500 yards or so) to get enough separation s you can identify a node.

    If you're shooting at shorter ranges only, and you have nice wide accuracy nodes that group shots nice and tight why bother. Just take advantage of that feature a heavy barrel possesses.

  10. #9
    Senior Member deadshot2's Avatar
    Join Date
    Nov 2012
    Location
    Upper Left Corner
    Posts
    4,851
    Quote Originally Posted by Orkan View Post
    I am an advocate of OCW instead of audette ladder testing.

    I don't remember what forum it was, maybe here, but one person showed his variation of the Audette ladder test. Rather than using a target vertically, he drew a horizontal line with spaced "aim points" then merely measured the vertical displacement above or below the line to identify his nodes. It seemed to work and made it a lot easier to identify each shot as to it's position in the sequence. With a conventional Audette, you can get pretty cluttered in a hurry. You need a good spotting scope and have to mark your hits accurately on your bench sheet. His method simplified this greatly.

  11. #10
    Sponsors Orkan's Avatar
    Join Date
    Aug 2006
    Posts
    6,268
    That's one of the reasons I prefer OCW. Much easier to track, and the results are far more definitive. I believe there is more to timing the load than vertical dispersion. You can test at 100yds with OCW, on most things. That's nice!

Page 1 of 2 12 LastLast

Ads

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Similar Threads

  1. Range report, ladder testing, 7mag.
    By Bealzybub in forum SOP
    Replies: 5
    Last Post: 12-16-2013, 01:05 PM
  2. Ladder Test?
    By claytongarber in forum Cartridges & Calibers
    Replies: 3
    Last Post: 12-14-2011, 02:39 PM
  3. ocw vs. ladder test pro's and con's
    By kingfamous in forum Cartridges & Calibers
    Replies: 2
    Last Post: 01-01-2011, 11:50 PM
  4. ladder testing relaods
    By ekaphoto in forum Cartridges & Calibers
    Replies: 7
    Last Post: 02-03-2010, 09:57 PM
  5. Help me with my OCW ladder test, 180gr 30-06
    By Essayons in forum Cartridges & Calibers
    Replies: 7
    Last Post: 12-17-2009, 12:48 PM

Search tags for this page

ladder testing
,
ladder testing cartridge
,
ocw vs ladder
,
testing for ladder
,

understanding ocw and audettes testing

Click on a term to search for related topics.