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.
The difference between 5 and 30 is the same as 30-5=25
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
Between 1947 and 1950