PCP Tune problem or normal?

[Xler]

I’ve been experimenting with my .22 PCP and would appreciate some input from shooters with more experience tuning for wind performance.

Current setup

• .22 caliber PCP
• 18 grain pellets
• ~865 FPS
• ~30 FPE
• ES around 4 FPS SD 1.1

In calm conditions the rifle shoots very well. (See photos)

45m / 50 yards

• 5 shots
• 10.9mm end-to-end

50m / 55 yards

• 6 shots
• 12.7mm end-to-end

When the wind starts showing up, the groups open considerably:

50 yards

• 22.5mm end-to-end

55 yards

• 29mm end-to-end

What’s interesting is that the groups don’t simply spread horizontally. I often see vertical spread and sometimes what looks like multiple smaller clusters within the same group.

My question is:

Is this simply the kind of performance that should be expected from an 18 grain diabolo pellet at 50-55 yards in real-world wind conditions? Or do I have stability issues causing the pellet to go all over the place during wind?

Thanks!

 

[Solo1]

First welcome to the club! And as for wind 18 gr pellets don’t have the highest bc and yes wind will push them all over the place at 55 yds.

 

[Xler]

Thanks man

First welcome to the club! And as for wind 18 gr pellets don’t have the highest bc and yes wind will push them all over the place at 55 yds.
View attachment 21331

Thanks man! This makes total sense. Quick question, is my current tune and performance good and leave it as is or do you have any suggestions? Is this really what I can expect from an 18 grain pellet or can it perform better? Sorry if it's a newbie question, I'm only few months in to PCPs )