What distance do you do your load testing,etc

[FUBAR]

I use the same POA on the same target, but some will use separate targets, still using the same POA on each target. As the powder is increased the bullet will normally hit higher each time, hence the term ladder test.

Most of the time it's easy to determine which shot group produced the smallest MOA, with the lowest ES/SD

[acemisser]

ok I got it now and I appreciate your kind replies...John

[thomae]

Here's some additional information. If you google "ladder test" or OCW test you will find some good stuff.
http://www.mikeswillowlake.com/the_ladder_test.htm

[FUBAR]

Should say that, I use a variant of the Ladder to find my max load, and I record all that data.

[oldman10mm]

I test at 100 yds.
Per Federal premium ammo website ballistic data,a crosswind that deflects a bullet a certain amount at 100 yds will deflect that bullet 4 times the amount that it was deflected at 200 yds.
For example from their site,their 270 Win. load with Sierra 150 BTSP Gameking into a 10 mph crosswind will deflect .7" @ 100yds, 2.7" @ 200 yds.
If you can load test on a perfectly calm day,then distance doesn't matter. Why introduce such a load testing variable just to load test at an extra 100 yds.
I'm just a 'paper puncher',I don't hunt. Once I find that load the rifle likes at 100,then I'll shoot further distances to determine trajectory.