I have only shot the one of these. It was shooting 21.14 H&N right at 1100 fps accuracy was poor. Slowed it down to around 880 shot pretty good right about 1 inch at 50 yards I can’t say this is the norm though but I can shoot the other to see. That was with the H&N also no luck with JSB’s. So here’s the beauty of these guns. It is fairly simple to install an aftermarket barrel because the transfer port is built into the breech. And very easy to work on,they make great power and great project rifles. I have a Lathe and a mill so it easy for me to fix any problems.
My original one that I have had for about three years has a 20 inch polygonal lothar in .22. Shoots 33.95 JSB’s between 870 to 890 with armasight vampire gen1. Due to its violent nature and hate for coons been nicknamed the P-COON. And has close to a hundred under it belt 31 of those taken in three outings.
Hope this helps if you get one and need help let me know I will do what I can.
Thanks Chris