Tuning Kalibrgun Argus 60

I can tell you the reg. is factory set at 105 bar. No sure of barrel. Mine shoots great. Bought mine from Charlie at Georgia airguns. 
20210618_081147.1632057731.jpg

 
I would like to know more about the Argus 60 also. I love the design but not much people on the forums have the gun. I just reached out to one of the airgun YouTuber who shot both the Argus 60 and the Cricket Tacitical 60 and he recommends the Tactical as he said there was a lot of problems with the Argus he reviewed. Hoping he would further elaborate on what the problems was and kind of frustrated that he didn't mention anything in the video. Disappointed to hear that as I was about to pull the trigger on the gun, now leaning more towards the Tactical but just not a fan of the tactical look on an airgun.
 
I'm actually also very happy with mine, it's just curiosity. The thing is built like a tank so I don't really know if there is much that can go wrong.

Take a look at this shot string, shooting .25 33.95 JSB -- unsorted, straight out of the tin :

Shot count: 24
Low: 265
Hi: 269
Avg: 267
STD Dev: 0.9
Spread: 4.0

14/09/2021 14:54:57 --> 267
14/09/2021 14:55:15 --> 267
14/09/2021 14:55:38 --> 268
14/09/2021 14:56:03 --> 269
14/09/2021 14:56:23 --> 266
14/09/2021 14:56:50 --> 266
14/09/2021 14:57:11 --> 268
14/09/2021 14:57:24 --> 267
14/09/2021 14:57:46 --> 267
14/09/2021 14:57:57 --> 267
14/09/2021 14:58:29 --> 268
14/09/2021 14:58:48 --> 266
14/09/2021 15:00:12 --> 267
14/09/2021 15:00:36 --> 267
14/09/2021 15:00:57 --> 267
14/09/2021 15:01:20 --> 265
14/09/2021 15:01:37 --> 267
14/09/2021 15:01:49 --> 265
14/09/2021 15:02:26 --> 266
14/09/2021 15:02:39 --> 266
14/09/2021 15:03:12 --> 267
14/09/2021 15:03:35 --> 268
14/09/2021 15:03:54 --> 267
14/09/2021 15:04:38 --> 267

It's bonkers. Actually for my back yard it's shooting too hot so I dialed it down :

Shot count: 24
Low: 246
Hi: 252
Avg: 249
STD Dev: 1.4
Spread: 6.0

19/09/2021 17:08:18 --> 248
19/09/2021 17:08:54 --> 248
19/09/2021 17:09:41 --> 247
19/09/2021 17:10:27 --> 249
19/09/2021 17:11:17 --> 249
19/09/2021 17:11:42 --> 248
19/09/2021 17:12:22 --> 246
19/09/2021 17:13:14 --> 248
19/09/2021 17:13:40 --> 250
19/09/2021 17:14:13 --> 251
19/09/2021 17:14:38 --> 248
19/09/2021 17:15:06 --> 250
19/09/2021 17:20:08 --> 249
19/09/2021 17:20:41 --> 250
19/09/2021 17:21:01 --> 248
19/09/2021 17:21:21 --> 249
19/09/2021 17:21:49 --> 250
19/09/2021 17:22:53 --> 250
19/09/2021 17:23:19 --> 248
19/09/2021 17:24:09 --> 252
19/09/2021 17:24:32 --> 250
19/09/2021 17:25:18 --> 251
19/09/2021 17:25:55 --> 248
19/09/2021 17:26:16 --> 248

Seems I have some more spread now but it doesn't bark as much. Also, still unsorted pellets. I really should try to find a good pellet, the ones I was shooting had all kinds of inconsistencies. Isn't JSB supposed to be the bees knees? Skirts are bent, the head looks like it had craters in it. 
Maybe I need to order a tin of AA or FX pellets, they are still JSB made but with a different die.