[fred cook]

The first one on the left is over 69 caliber, #2 is almost 58 caliber, #3 is over 50 caliber, #4 is the .54 Burnside, #5 is over .45 caliber, #6 is over .45 caliber and #7 is less than 7mm. As I said earlier, all are cartridges for American firearms except for one and the firearm that uses it was invented by an American!