Make sure it's all there! The 99 had a bolt dust cover, never found one on any rifle. Aircraft "wings" sights, monopad, and an intact Mum. The 7.7 caliber Japanese rounds are hard ones. There was Rimmed, semi rimmed, and Rimless, as you would guess, they are not interchangable. Power is similar to the .30-06, not the .303. The .303 and 7.7 both use a .311 bullet.