[ripperkon]

Hmm... I have to tell you I tested it on the Range.
And I have to tell you I have the feeling the 6.05 PDI results a lower accuracy.
It was not that easy to hit a human sized Target at 60m.
With the 6.03 by MadBull I was able to hit Targets at 70m.

In the next days I will shoot again with the 6.03 barrel to be sure. Because when I was shooting with the 6.05 it was much colder than earlyer with the 6.03. So maybe the hopup was to hard or something .... ?
Btw. I use HPA so the energy was the same (3J).

 

[cerboknight]

Surely the 6.03 would be shooting a bit harder than the 6.05? I wouldn't have thought it would be that big of a difference though

 

[ripperkon]

Because of the HPA System the FPS (~430fps) are the same.
But in my Test the 6.03 by MadBull was more accurate on long range.

But this weekend I will go out and shoot again with the 6.03 by MadBull. When I can still hit at 70m I am sure the 6.03 465mm by Madbull is more Accurate than the 6.05 470mm by PDI.

Maybe the "theory" with the bigger diameter does only work on lower fps?

 

[metallicafatcat]

Because of the HPA System the FPS (~430fps) are the same.
But in my Test the 6.03 by MadBull was more accurate on long range.

But this weekend I will go out and shoot again with the 6.03 by MadBull. When I can still hit at 70m I am sure the 6.03 465mm by Madbull is more Accurate than the 6.05 470mm by PDI.

Maybe the "theory" with the bigger diameter does only work on lower fps?

Go back and re-install everything. That sounds like where your problem is lying.