OK, I know, it’s 2:30 in the morning on my side of the globe as I do this post, so maybe my brain is just at 50% and the answer to my question will be glaringly obvious after 7 hours of sleep.... 
Here it goes:
Why would I test which pellets my gun likes at 30 or 50 yards — if eventually all I want is one or two pellets that shoot well at all distances 10 to 100 yards??
It seems that a pellet that groups well at 100y will also group well at 50y, but not necessarily the reverse is true. ¿Right?
So, as I’m getting ready for a full blown pellet test for a new gun (PCP), what can you recommend?
Thanks!
Matthias

Here it goes:
Why would I test which pellets my gun likes at 30 or 50 yards — if eventually all I want is one or two pellets that shoot well at all distances 10 to 100 yards??
It seems that a pellet that groups well at 100y will also group well at 50y, but not necessarily the reverse is true. ¿Right?
So, as I’m getting ready for a full blown pellet test for a new gun (PCP), what can you recommend?
Thanks!

Matthias