There is some confusion and misinformation about 7mm that is common on the internet. Here are a couple of tidbits: 1) There is no minimum caliber law that requires a 7mm rifle for plainsgame in Namibia. 2) A meter is 39.370 inches. A millimeter is .039370 inches. Seven (7) millimeters is .27559 inches. 3) A .270 bullet measuring .277 inches is slightly larger than 7mm, but rifles chambered with the name of "7mm" use bullets measuring .284 inches.