30 caliber refers to any cartridge loaded with a bullet approximately 30/100 inch in diameter. 30-06 is just one of about 100 different 30 caliber cartridges.
They are the same; just said in different order.
.30 vs. .355
They're both measurements of the diameter of the round (or the barrel). Caliber is a measurement in inches, and millimeters are millimeters. For instance, a .30 caliber bullet is 30 hundredths of an inch, or 7.62 millimeters in diameter.
it might be for the Krag rifle, cal. 30/40..... not 30/06
30 odd 6 .3006 of an inch same difference
None. Same cartridge, different name.
Surprisingly little. Both are .30 caliber, one uses a longer case and more powder, than the other. The 30-06 is a longer cartridge. It is a similar situation as the .38/.357 and the .44mag/.44sp, or the .45LC/.454 The performance difference between the two is pretty small, with the 06 showing a flatter trajectory at the greater distances. Unless you're competitive, you'll be quite happy with either caliber.
Yes it is, it uses a .30 caliber bullet which makes it a 30 caliber
30/06 is one
30 caliber
A 5.56mm is the same thing as a .225 caliber. If you do the math, a 30 caliber is MUCH bigger!
30 caliber with 30 grains of powder