Ha! Well, you may be in luck. When I bought Death Dealer, she was a .30 caliber with STX barrel and liner. And today, I am installing that barrel system into my buddy Tony's .22 Impact Mk2. He's not happy with the .22, so I suggested he swap me out with the .30, and we'll put it in today. I have one partial sleeve of .30 Hybrids he can try...
Chuck, will do. We installed the .30 STX barrel, with Huma transfer port and pellet probe, set reg to about 115 bar, and speed with 44.75 pellets at about 900 FPS. The Slugs were about 875 FPS. Should be good for a test out to 100 yards or more, and we'll schwack a bottle at 30 yards.
The last group shot at the 6:00 position measured about 3/8" at 50 yards and I will show you a photo of the Shoot-N-See with that group here below...so maybe some of you guys should try indexing your barrel liner to see if it improves your accuracy!