For anyone interested, I have a really nice
Taipan Vet, Gen 1, in .25 that would easily meet your needs. It has a power plenum, Donny FL Tanto moderator, doesn't leak, and a lot of accessories. It is a CZ made rifle. It shoots JSB 33 and the JSB Knockout slugs very well at about 900 fps.
I have been planning on posting it on Airgun Nation, but haven't gotten around to it yet. It has the green laminate stock and is the 700mm model. Perfect condition and ready to go. The only reason that I am considering selling it is that it is a bit too much for my backyard. I usually shoot a Brocock Commander XR in .22, as it is more backyard friendly where I live. I am located in North Alabama, but would ship as I have the box. If you're interested, please pm me, and I will send you pics and details. You can find some of my posts as member "
Bollweevil" on
https://www.airgunnation.com/ Best of luck in your pursuit!
Chris in AL