Which group would you pursue?

[film495]

I don't know, but picking between those tight groups for what load to choose seems like a good problem to have.

 

[JFrank]

I would shoot more groups

Personally I would like to see the loads coming into tune and back out of tune, so yes we need more incremental data not just more shots per increment.
As posted the poi on the lower group is shifting, meaning unstable imo.

 

[LocoGringo]

Update: Sorry guys, I thought it was understood that he would shoot them at 100 yards for testing. He didn't. He shot them at 50, so it seems the data is useless.

Anyway, if nothing else, he's got some ammo to practice with that will (hopefully) yield 1.25" groups or so.