Me: (Idly flipping through the Big Book Of Bullets) "Huh. '.10 Eichelberger Long Rifle'..."
Me: "You take store-bought .22LR, pull the bullets, dump the powder..."
RX: "But it's a rimfire! How do you get the priming compound...?"
Me: "...run the primed cases through a series of sizing dies..."
Me: "...and then you seat your..."
Me: "...7.5gr .103" spitzer bullet over not quite two grains of AA9, and launch that sucker at over 2100 feet-per-second."
RX: "Yes, but what would you do with it?"
Me: "I bet it would $&#@ up a mouse."
RX: "Yes, but so would a darning needle attached to a length of dowel rod, and it would be a lot more sporting to hunt them that way. I believe fat Hermann was the last hunstman in Europe to take a mouse with the traditional darning needle attached to a length of dowel rod. It just seems like something he'd do."