Caliber

Columns: Inch caliber | Metric caliber | Typical bullet diameter | Common cartridges
.26 | 6.5 mm | 0.264 in , 6.7 mm | 6.5×55mm Swedish , .260 Remington , .26 Nosler , 6.5mm Creedmoor , 6.5×47mm Lapua | .27 | 6.8 mm | 0.277 in , 7.035 mm | .270 Winchester , 6.8 SPC | .284 | 7 mm | 0.284 in , 7.213 mm | .280 Remington , 7mm-08 Remington , 7mm Weatherby Magnum , 7mm Remington Magnum , 7×57mm Mauser , 7×64mm | .308 | 7.62 mm | 0.308 in , 7.82 mm | .30 Luger ( 7.65 × 21mm Luger ) , .30-30 Win , 30 Herrett , .300 Whisper , .30-378 Weatherby , 7.63 Mannlicher-Schoenauer , 7.63 Mauser , .30 USA Rimless , .308 Corbon , .3-9 Savage , .30 Kurz , 300 AAC Blackout ( 7.62×35mm ) , 7.5mm Schmidt-Rubin , .300 Winchester Magnum , .30 Carbine , 309 JDJ , .30-03 , .30-06 Springfield , .30-06 JDJ , .307 GNR , .308 Winchester ( 7.62×51mm NATO ) , .300 Weatherby Magnum , .30 Army ( .30-40 Krag ) , 7.82mm Lazzeroni , and dozens more | .311 | 7.9 mm | 0.311 in , 7.92 mm | .303 British , 7.62×39mm Soviet , 7.62×54mmR , 7.62×25mm , 7.7×58mm | .312 | 7.94 mm | 0.312 in , 7.94 mm | .32 ACP | .323 | 8 mm | 0.323 in , 8.20 mm | 8×57mm IS , .325 WSM , 8mm Remington Magnum , 8 mm plastic ( airsoft ) BBs

Example questions:
What is the typical bullet diameter of the cartridge that was the second highest velocity commercially produced ammunition of common calibers when it came out ? | What is the typical bullet diameter of the cartridge that is a cartridge made by Littleman during 2002 of the common calibers ? | Of the common calibers , what is the inch caliber of the cartridge that is a cartridge made by Littleman during 2002 ? | What is the metric caliber of the cartridge that is a common caliber cartridge made by Littleman during 2002 ? | Of the common calibers , what is the inch caliber of the cartridge that was the second highest velocity commercially produced ammunition when it came out ?

Answers:
0.204 in | 0.172 in | .172 | 4 mm | .20 , .204