They are not. Look at this:
3.08
3.80
The larger one is 3.8. It's kind of like 308 is smaller than 380
It is: 79-38 = 41
The number that times 8 equals 308 is 38.
57
9
There is no need to estimate: 38 - 12 = 38 - (10 + 2) = 38 - 10 - 2 = 28 - 2 = 26.
It is: 79-38 = 41
It is 52 - 38 = 14.
14.6341% difference.
It depends. Many people say "38" when they are referring to the .38 special, so in that case, there is no difference, they are one and the same. However, there are several .38 caliber cartridges other than the .38 special. There is the .38 ACP, .38 long Colt, .38 short Colt, .38 S&W, .38 Super, and I think one or two others.
The number that times 8 equals 308 is 38.
Single and Twin are common names given to the same mattress. 38 x 74
20
57
Bullet diameter on a 38 is .357; on a 380 it is .355 Case is longer on a 38.
though they have one similarity both have the difference of 38
38
The 22 is a very small bullet and the 38 is about 4 times larger. The pistols however may be about the same size but will be chambered accordingly.