CREATE TABLE table_24444 ("Class" TEXT, "Weapon" TEXT, "Caliber" TEXT, "Type" TEXT, "Weight  ( g ) " TEXT, "Range  ( m ) " TEXT, "Velocity  ( m/s ) " TEXT, "Impact Energy" TEXT, "Shots" FLOAT)

How many calibers require the type LB/RN?
SELECT COUNT("Caliber") FROM table_24444 WHERE "Type" = 'LB/RN'
SELECT COUNT("Caliber") FROM "table_24444" WHERE "Type" = 'LB/RN'