What temperature are you shooting at? I just came over to the Dark Side myself with my new Sunshine Disco.
When I first got it 2 weeks ago,the temperature was 70-75 degrees, and I got 30+ (stopped counting) from 2000 PSI down to 1000 PS, but I was only shooting 10 yds.
Lastweekend I went hunting with it, and the temperature was a brisk 45 degrees. The first 3 or 4 shots at a 2000 PSI fill were off the mark at 25 yds.
From 1800 PSIto 1000 PSI they were accurate, but I only got around 20 shots per fill. The denser cold air does use more up, but how much I really don't know.
I tried all weekend filling to 2000 and 1800 PSI and that extra 200 PSI really messed me up for 3-4 shots each time, so I'll only be filling to 1800 PSI.
I need to get to a chrony to see what this is really doing. Maybe I can pick up the extra shots at the low end down to 800 PSI.
I don't know when I'll see 70-75 degrees again in NY, so I'll have to wait on checking the 30+ shot count again.
I was definately making shots that I previously missed with my springer.