For that guestimate of 90 shots as a 30fpe .20 I was using the 480 cc bottle. Having shot it more now, I'd guess more like 105-115 shots from the 30fpe .20.
Your question prompted me to skim through some of the posts and as I did so, I realized I haven't been great at documenting shot counts at each configuration.
The most solid data I could find on shot counts was from the .22 HP configuration. This is from post #317.
With a strict inclusion criteria of single digit spread, it was good for 55 shots at just under 50fpe as a .22 (480cc bottle).
View attachment 366230 With less stringent ES requirements, good for about 65 shots at 50fpe, again, as a .22 with the 480cc bottle.
View attachment 366234 Other configuration's shots counts, from memory and rough estimates....
120-140 shots as a 19 fpe .177 (with 300cc bottle)
220+ shots as a 19.5 fpe .20 (with 480cc bottle)
This is of course specific to how I've configured those tunes. For example, with the 19.5fpe .20, I'm running a reg pressure of 140bar, for two reasons. The first is that it allows me to get 30fpe with the .20 Heavies by just spinning the hammer tension wheel. The second is that I like the crisper shot cycle (has a bit of blaaaaaaat feel with low reg pressure "tunes"). So, with a low reg pressure/19.5fpe tune in .20, shot count would likely be different than what I'm seeing.
And that more than one way to skin a cat concept is one of the things that makes the Ghost so appealing to me. With all the adjustability, a patient owner can adjust to suit their preferences. Which is pretty much where I'm at with it now. I've got it adjusted just how I like it, not really testing and tinkering and tuning anymore, but rather just shooting it and enjoying it. And that's why the posts here on the review have not only slowed down, but changed in nature from learning/discovering/sharing posts, to more straightforward and simple results posts.
And on the topic of results.....
I shot the Ghost at the field target match over near Flagstaff this past weekend. It was a 48 shot match and I scored a 45. The three misses were where I misjudged the wind on long targets. The course was a rather easy one, and should have been my first perfect match with the Ghost. I went 34 or so shots without a miss and I got cocky and quit paying as much attention to wind as I should have. First miss was on lane 9, mentally assumed that would be my only miss. Lane 10 was the 4/4 kneelers. Missed both far shots on lane 11 and then went 4/4 on my last lane, the offhand shots. Simple as that, I messed up and didnt pay close enough attention to the wind, too busy counting my chickens before they hatched.
The high score of the match was good friend Bobby, with a 46/48. While disappointed in myself, it was great to see Bobby win. He and I were diehard Open class shooters and noticing how few Open participants we've been seeing, we recently decided to give Hunter class a try. So, very cool to see him win in a new class. He shot his Delta Wolf, using a .20 barrel he machined. (he also machined the .20 barrel that I was using in the Ghost).
(There was mention made of AOA getting me one of the 700mm barrels in .22. I'm in no huge hurry for that, enjoying the low power summer field target matches, but when high power/long range ft matches kick in again this fall, I'd like to do some experimentation with that 700mm .22 barrel. And since Ben's high power matches allow slugs, Im not against competing with slugs, if the 700mm barrel they send me likes them. So sharing of that testing experience may be in the future.)