Go to the various bullet manufacturer's websites and look for supplemental load data. Unfortuanately I don't know of which ones offer a 20 caliber bullet.
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Records were made to be broken
2011 Spring Turkey Contest Team 1 Kee Kee Krew
2010 Spring Turkey Contest Team 8 Kee Kee Krew Winners
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"A hunter should not select a caliber and bullet that will kill when everything goes right, rather,
should choose ones that will kill when everything goes wrong."
"Recoil lasts a second, but gravity lasts forever."
204 ruger loading data
