Shooters Forum banner

fire forming

  1. 303/25 rimless or 257 Swift

    Wildcat Cartridges
    Hi all hope someone can help. I purchased a c96 swedish mauser supposedly in 303/25. However it wasnt it was 303/25 rimless. The old procedure for making these cartridges was to grind off the rim of a 303 and then grind in a groove to make it rimless. Then also neck down to 250. That is too...