The 204 is a fun round. I also have a 22-250 barrel and had a 223 barrel but sold it because I liked the 22-250 better. Ive recently bought a 204 barrel for it but decided to go with a 15 inch pistol barrel just to have something different, and it is very different, accurate, and a ball to shoot, I have a 6 inch bipod on it and a 2-7 power pistol scope. As for reloading data, there isnt a lot out there yet, and from what Ive read, factory ballistics cant be duplicated, because of powder availability. The 204 will do anything the 223 will do, but faster.but also a lighter bullet. Good luck on your decision, and have fun with it.