Round Robin

[Tim Singleton]

Ive read several posts lately guys posting pics of load development shooting in the round robin method. All charges shot with the same seating depth
I'm just missing something. How are you guys learning anything from this?

 

[pikespeakgoat]

Maybe they are looking for OCW??
http://optimalchargeweight.embarqspace.com/ocw-overview/4529824091

 

[Dusty Stevens]

I prefer to shoot mine "red rover"

 

[Tim Singleton]

That's a nice ladder test. Very nice last pic too
How do you decide seating depth? Do you just go from past experience on the bullet your using?

How does the round robin work into a ladder test?

One more question how much powder weight change between numbers?

 

[Tim Singleton]

Do you hold at the same POA when shooting each shot?

Some of the ones others have posted looks like they are shooting at different aim points in a circle with a different powder charge into each group
I can't make sense of those tests
The ladder test at a long range makes sense

Thank you for sharing

 

[Boxcar77]

For an OCW each charge weight will have its own target/POA.

 

[Zero333]

I don't do round robins... I shoot each charge weight group (or seating depth group) consecutively.

If I want sub 1/2moa groups I better not change a thing with my shooting setup/position.

 

[dmoran]

I don't do round robins... I shoot each charge weight group (or seating depth group) consecutively.

If I want sub 1/2moa groups I better not change a thing with my shooting setup/position.

How do you determine if one group had a condition advantage over another?
What distance are you testing at? ... and for what distance intended for?
Donovan

 

[Zero333]

How do you determine if one group had a condition advantage over another?
What distance are you testing at? ... and for what distance intended for?
Donovan

I'm shooting 200 & 300 meters most of the time. I don't usually test in very windy conditions, but if I must test in switching wind conditions I shoot 100meters and set up wind flags.

I'm not a expert bench shooter, so by not disturbing the rifle / rest setup and my posture pays off.

 

[dmoran]

I'm shooting 200 & 300 meters most of the time. I don't usually test in very windy conditions, but if I must test in switching wind conditions I shoot 100meters and set up wind flags.

I'm not a expert bench shooter, so by not disturbing the rifle / rest setup and my posture pays off.

Thanks for the feedback......
That is why Tom, myself, and others use 1 aim point ladder tests, fired round robin style. So that were shooting one consistent return to battery position and aim point, and not moving for separate aim points. Then by conducting them round robin style to equalize condition advantages between the increments.
Tom's targets above are capitol illustrations of the round robin ladder tests!.!.!
Donovan