Ladder results

[mr45man]

This is my best attempt at ladder testing to date. The backer was corrugated white plastic and picked up the colors better than the target paper. Loaded 3 of each unless one did not seat
the same , then i just loaded one more and used them any way.
So i assume the odd bullet in the group was the odd / different neck tension one.Color coding the bullets with sharpys seem to work

 

[XTR]

I'd load at 41.4 and start working on seating depth.

 

[bsekf]

I am not nitpicking, but aren't you using the Newberry OCW method instead of Audett Ladder method? I have used both and belive, for me, the OCW method is best. Newberry suggests 100 yards, but I see no problem if you go longer. I use 200 yards.

What is the feeling on the board?

Bill

 

[Mattm0812]

I use the OCW method @ 100 yards.

 

[M14AMU]

600 yards!!

 

[necchi]

I does kinda look like an OCW on the paper.

The idea of a ladder test is to work incremental loads on the same sheet looking for horizontal similarities so a prefered "zone" or range of charges can be isolated for further testing.

Whats shown is a rather random spread of charges,, :-\ there is little info there beyond seeing how each load looks compared to the other.

The Audette ladder is best used for long distance and the test has best results at a minimum range of 200.

 

[Lapua40X]

Regardless of whether your test meets the technical criteria for a "ladder" test, I believe you have some data that you can work with. IMO, the "2?" is a no. I don't see a second round in there. Based on your results thus far, I'd run another test for groups at 200 yards with carefully calculated neck tension and seating depths at 41.3 41.4 41.5 (weigh 'em twice, shoot 'em with great care) and select the best performer out of that series, then run a few variations in seating depth to home in on a suitable load.

 

[mr45man]

OK i did a sort of ladder test previously to get in the "ball park"
at 200 yards.
Then i stretched it out to 500 M,using the load window i wanted to be in.
The OCW is to convoluted for me, I was just looking for the minimum vertical and not concerned with group centers etc.
I think a lot of load development at 100 or 200 yards is a waste of time, at least for the target shooter.

As for the 2nd round in the same hole, there is a missing blue bullet. it has to be there some where?
Going to play with seating next these were all .005 jump more or less

Thanks all for your input.
John H.

 

[Lapua40X]

As for the 2nd round in the same hole, there is a missing blue bullet. it has to be there some where?

Brings to mind a pistol match I competed in many years ago. I had a fifty shot group, most of which occupied at eight inch circle with only a few that were just outside of it and all well within a ten inch spread, but the scoring crew could only find 49 holes. They used the best tools available (similar to these http://www.theshootersbox.com/store/index.php?main_page=product_info&products_id=549) but they never did find what they could score as number 50. So my target dropped out of contention. They agreed that with a target like that the likelihood of my throwing one round completely off the target was slim to none; but the rule was "no hole, no score". Embarrassing, disappointing, maddening. :'(