Hello, I am revisiting my CZ527 221Fireball rifle and has been firing off old (2007) reloads and retesting loads. So far, I have have good luck with 35 g V Max, 40g Hornet hollow point bullets, 45g Soft Points. I am keen to test Speer 50g TNT using W296 powder. Has anyone try this combination? Or can anyone point me to the right direction? Thanks. BTW, all the above mentioned 35g to 45g bullets were tested using W296 powder.