Actually the box magazine does not have to be curved in order to feed a .45-70 cartridge as demonstrated by the Remington Lee which preceeded the Lee .303's. It had a box magazine somewhat similar to the .303 except it was somewhat straighter than the .303 in order to accomadate the straighter .45-70 round.
-------------------- What are the Rosary, the Cross or the Crucifix other than tools to help maintain the fortress of our faith in Jesus Christ, the Son of God?