The Whitetail is based on the .257 Roberts and is a standard improved cartridge. Performance with a bullet is approximately and with a bullet is approximately . .25-270 ICL Ram The Ram is based on a .270 Winchester that is necked-down and blown-out. At the time it was considered an over-bore cartridge, before the advent of more appropriate slower-burning powder. Performance with a bullet is approximately and with a bullet is approximately . 6.5 ICL Boar The Boar is based on a .270 Winchester that is necked-down and blown-out. Performance with a bullet is approximately . 6.5mm ICL Magnum The 6.5 ICL is an improved .264 Winchester Magnum but with a longer neck for easier handloading. Performance with a bullet is approximately and with a bullet is approximately . .27-.28 caliber cartridges .277 ICL Flying Saucer The Flying Saucer is a necked-up blown-out .257 Roberts. Performance with a bullet is approximately and with a bullet is approximately . .270 ICL Magnum The .270 ICL is an improved .264 Winchester Magnum necked up to .270. It's a relatively efficient cartridge for its class. Performance with a bullet is approximately and with a bullet is approximately . 7mm ICL Magnum The 7mm ICL is an improved .264 Winchester Magnum necked up to .7mm. Performance with a bullet is approximately and with a bullet is approximately . 7mm ICL Tortilla The Tortilla is an improved 7x57. Performance with a bullet is approximately and with a bullet is approximately . 7mm ICL Wapiti The Wapiti is a more complicated wildcat based on the .300 H&H Magnum being necked-down, trimmed, and then fire-formed. The large case is well-suited to heavy bullets. Performance with a bullet is approximately . .30 caliber cartridges .300 ICL Tornado The Tornado is based on a .257 Roberts case that is improved and necked to .30 caliber, essentially the same as the .277 ICL Flying Saucer, but necked-up. Performance with a bullet is up to , with a bullet is up to and with a bullet is up to . .30/06 ICL Caribou The Caribou is an improved .30-06. With heavy bullets it can reach the same level as factory loads for the .300 H&H Magnum. Performance with a bullet is up to , with a bullet is up to and with a bullet is up to . .30 ICL Grizzly Cub The Grizzly Cub is a shortened magnum for standard