What is bigger a 7.7 rifle or a 30-06?

Answer 1

Lookup caliber in wikipedia. These are calibers bigger than 7.7. Most of them are commercially available. Biggest you can get is 50bmg 287 mm0.284 in, 7.213 mm7 mm Remington Magnum, 7 x 57 mmcommonly called 7 mm.307.62 mm0.308 in30-06, .308 Winchester (7.62mm NATO), .300 Winchester MagnumAmerican ".30 caliber".307.62 mm0.311 in.303 British, 7.62x39, 7.62x54ROther ".30 caliber".32, .3277.65 mm0.309 - 0.312 in.32 ACP, .32 S&W, .327 Federal Magnum.32 caliber handgun cartridges.32, .3258 mm0.323 in.325 WSM, 8 mm Remington Magnum, 8mm plastic (airsoft) BBs.32 caliber rifle cartridges.3388.58 mm0.338 in.338 Lapua, .338 Winchester Magnum, .338 Federal.338 Rifle cartridge.38, .380, .357, .359 mm0.355-0.357 in.38 Special, .380 ACP, .357 Magnum, .357 SIG, .35 Remington, 9 mm Luger, 9x18mm MakarovGenerally .357 for revolvers and rifles, .355 in autoloaders.3810 mm0.400 in.38-40Old black powder cartridge.4010 mm0.400 in.40 S&W, 10 mm Auto.40410.25 mm0.423 in.404 Jeffery.40510.75 mm0.411 in.405 Winchester.40810.4 mm0.408 in.408 Chey TacCheyTac Intervention.4110.25 mm0.410 in.41 Magnum .41 Action Express.41610.6 mm0.416 in.416 Barrett, .416 Remington Magnum, .416 Rigby,.416 Weatherby MagnumLong-range sniper rounds.4311 mm0.43 in Sl.43 SL large.4410.8 mm0.427 - 0.430 in.44 Magnum.4511.45 mm0.451-0.452 in.45 ACP, 45GAPHandgun .45 calibers, .451 autos and .452 in revolvers.4511.6 mm0.458 in.45-70 GovernmentMost rifle .45 calibers.45411.53 mm0.454 in.454 CasullOnce considered a wildcat cartridge, becoming more common.458, .4611.6 mm0.458 in.460 Weatherby, .458 Winchester Magnum.475, .48012 mm0.475 in.480 Ruger, .475 Linebaugh.5012.7 mm0.50 in.50 AE, .500 S&W, .50 Beowulf, .50 GIDesert Eagle, S&W X-Frame, Alexander Arms .50 Beowulf, Guncrafter Industries 1911 .50.5012.95 mm0.510 in.50 BMG, 12.7 x 108 mmM2 Browning machine gun and other heavy machine guns, long range rifles typified by Barrett Firearms Manufacturing products.6817.5 mm0.683-0.696 in.689 Caliber Paintball markersTypically .689 Caliber, not called 17.5mm (Not actually a firearm).7920 mm0.787 invariousautocannon caliber, about the smallest caliber capable of an explosive filling