9mm

Question 1

What is the bullet diameter difference between 9mm and .357

Answer 1

9mm - .355
.357 - .357

Question 2

Case length difference between 9mm and .357?

Answer 2

9mm - .75”
.357 - 1.29”

Question 3

On average, what is the muzzle energy difference between the 9mm and .357?

Answer 3

9mm - 340 ft lbs
.357 - 600 ft lbs

Question 4

What is the most common grain bullets for 9mm?

Answer 4

115, 124, and 147 grain

Question 5

What is the average velocity of 9mm 124 grain vs .357 125 grain?

Answer 5

9mm 124 grain - 1150 fps
.357 125 grain - 1450 fps

Question 6

Besides the .357, is the 9mm bullet identical to anything else?

Answer 6

The 380 has an identical bullet size (.355)

However the cases are different
9mm - .75”
380 - .68”