Frank,

I would suggest starting the testing at 15 meters.

I would think that the pellet that grouped best at 15 meters, would also be the best at 5 & 10 meters.

As an aside, I have shot groups with the dome-head 'field' pellets that were equally good as the flat-head 'match' pellets at ranges up to 20 meters.

At ranges beyond 20 meters, I use dome-heads (JSB Express) as they hold their velocity better.

Have fun & a good weekend

Best regards

Rus