Re: BTW ... What is everyone fav-o-rite ammo goin
Start with a caliber being one inch. Your reference to a .357 magnum is .357 of an inch.
To demonstrate the difference between "caliber (inch)" and power, velocity, and speed of a cartridge.
Think of .300 as .30. Compare a .30 Carbine with .300 RUM (Remington Ultra Magnum).
Both are .30 caliber (3/10ths of an inch) but the size and power of the round is DRASTIC. The caliber only defines the diameter.
I have never leaned how to post pictures, on this forum board. But, do a search of the rimless .30 caliber (M-1) and a .300 RUM. The difference is dramatic. Or, to make matters dramatically different, compare a .357 magnum to the .300 RUM ...
A .357 had to be bigger, right?