What caliber will you choose for the next rifle you buy or have built? If you don't find your exact caliber, pick your second choice. 17 or 20 Caliber 223 Rem or 22-250 22 PPC or 22 BR 6 PPC 6 BR (incl. 6 BRX, 6 Dasher) 6XC, .243 Win, 6-284 6.5mm (.260, 6.5x55, 6.5-284) 7mm (.284, 7mm WSM) Small 30 Caliber (30BR, 30x47) Big 30 Caliber (.308, 30-06, 300 WM)