An old man with no family that hunts gave 2 of my friends all of his guns (several thousand $$$ worth) anyway one of them is an automatic winchester 351 made in 1907 i think for prison guards he said. He said it was only made this one year so not much need for ammo. He had one box but to buy more said they are about $100 for 20 shells. Anyone know what it would take to reload these. How could you make brass? He said trim a 30 herrett. Any help appreciated.