CREATE TABLE table_20467 ("Cartridge" TEXT, "Bullet weight" TEXT, "Muzzle velocity" TEXT, "Muzzle energy" TEXT, "Source" TEXT)

What type of cartridge is used by a Weatherby?
SELECT "Cartridge" FROM table_20467 WHERE "Source" = 'Weatherby'
SELECT "Cartridge" FROM "table_20467" WHERE "Source" = 'Weatherby'