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
Harvey,
(I should have explained that we were trying to do pistol silhouette type shooting at ranges up to 40 meters. The targets bore remarkable resemblance to tin cans )
Have fun & a good weekend
Best regards
Russ
PS I lived in Norwich for many years - on Earlham Road, and in North Walsham for even longer. I really miss living in Norfolk