Seating Depth Testing: Round Robin or All At Once?

[Winny94]

Im doing the Berger course depth ladder test later this week (2 3-rd groups of 4 different jumps). Im wondering if I should shoot 3 shot groups of each depth, or shoot in a round robin style? (regardless im left with 8 different 3-shot groups - just trying to decide if I should shoot those groups individually or round robin)

thanks

 

[garandman]

I settle on what powder charge, then I tweak seating depth. Its got me under half MoA.

In reality I see no reason why the order matters as the best load is gonna be a specific charge at specific seating depth.

Id recommend 5 shot groups, of all one depth at once.

 

[Alex Wheeler]

I assume your shooting a ladder format based on your question, I will do either depending on conditions. If its really good, round robin, but usually groups.

 

[Winny94]

I assume your shooting a ladder format based on your question, I will do either depending on conditions. If its really good, round robin, but usually groups.

Correct. The Berger method is a form of a ladder in .040 jumps. Ill edit my original question to clear that up a bit.
THanks for the input!

 

[garandman]

Correct. The Berger method is a form of a ladder in .040 jumps. Ill edit my original question to clear that up a bit.
THanks for the input!

To me... 0.040 jumps are YUUUUGE. I go 0.005 jumps.

 

[jepp2]

To me... 0.040 jumps are YUUUUGE. I go 0.005 jumps.

For the VLD's, Berger recommends 0.040" jumps and you pick the group that stands out. Then you go with the smaller increments. That is based on their findings of what works best.

 

[Nick Caprinolo]

I do two, three round groups, for each step. This shows me that one good group is not a fluke.

 

[garandman]

For the VLD's, Berger recommends 0.040" jumps and you pick the group that stands out. Then you go with the smaller increments. That is based on their findings of what works best.

Gotcha.

 

[Winny94]

To me... 0.040 jumps are YUUUUGE. I go 0.005 jumps.

Yea, I had to re-read it several times. It "feels" wrong, but everyone ive spoken with says it works. Check it out:
https://bergerbullets.com/vld-making-shoot/

 

[Butte Sink]

Good input on the round robin
I’m doing the same this coming weekend with a 210 VLD and will go that route
Thanks

 

[Coyotefurharvester]

So do you start with the loads furthest off the lands, in case the longer jump shows best groups early in test ? Then seat remaining rounds deeper to test between the steps. Asking about hunting rifle, since I don't shoot targets or steel.

 

[Dusty Stevens]

Shoot each group together. Too much time for conditions to change for “round robin” to have any place in shooting groups

 

[Dusty Stevens]

And stop shooting at 2 shots if it sucks. The third shot wont make it smaller.

 

[JFrank]

So do you start with the loads furthest off the lands, in case the longer jump shows best groups early in test ? Then seat remaining rounds deeper to test between the steps. Asking about hunting rifle, since I don't shoot targets or steel.

I’ll shoot these at 550 yards’ one point of aim probably a round robin I’ll make that call at the range
Alright I chickened out and shot groups. Looks like green 3/4 vertical at 550 is this weeks winner ...

 

[Canadian bushman]

I never shoot round robin, i dont feel changing point of aim, moving the gun, or picking your head up more often do anything for a group.

 

[dolek]

I don't understand this "Round Robin" approach...what can be learned from introducing all the extra variables ?

 

[Tim Singleton]

I don't understand this "Round Robin" approach...what can be learned from introducing all the extra variables ?

Sounds cool tho!

 

[JFrank]

I don't understand this "Round Robin" approach...what can be learned from introducing all the extra variables ?

Well I’ve been meaning to try it but for some reason I chicken out at the last minute and shoot groups.
There’s a few real accomplished shooters I’ve talked to that say it’s a good way to test for mid range and beyond.
Hopefully or at least in my Mind I’ll reduce some variables by using one point of aim and not shifting my rear bag around.
The other thought is barrel heat distribution throughout the test would evened out.

 

[Dusty Stevens]

Well I’ve been meaning to try it but for some reason I chicken out at the last minute and shoot groups.
There’s a few real accomplished shooters I’ve talked to that say it’s a good way to test for mid range and beyond.
Hopefully or at least in my Mind I’ll reduce some variables by using one point of aim and not shifting my rear bag around.
The other thought is barrel heat distribution throughout the test would evened out.

Would a group be more consistent if shot all at once or over a few minutes time- counting wind and fouling wise?

 

[garandman]

Round robin introduces unnecessary complexity to the process.