win 303Congrats!. And I'm also wondering what bullet weht. Been reloading .303 British for over 20 years. Mht take the #4 Mk 1 out for whitetail this fall using 180 gr. Sierras.The 303 mid tower chassis was crafted out of quality SECC steel and comes with a tempered glass side panel that can be removed with just a press of a button. The internal desn has a