RON in PA
Member
Nichts!
My CCW training guy said that the differences between .357 and .38's measurments come to be due to measurements from land-to-land and groove-to-groove. I dont' know if this is applicable or what, but umm... yeah...
Actually the .38 predates the 9mm. It's name derives from the days when it was a heeled bullet and was .38" in diameter. Later it was changed and the lube grooves could then fit inside of the case and became a .357" diameter. Your CCW guy needs to brush up on his cartridge history.The CCW training guy said that the bullets were all the same 9mm size, and the barrels were the same diameter, but the different numbers just come from different places inside the barrel
there are many different 9mm/.355 cartridges
9x17 AKA 9mm kurz, 380 auto
9x18 AKA 9mm makarov
9x19 AKA luger, parabellem,
9x21
9x21.5 AKA S&W 9mmTSW
9x23
38 super, has a 355 bullet
The following all have 357/358 diameter bullets
38 short colt, shortest
38 special, middle length
357 magnum, longest
357 maximum, longer still
Problem is, all bullets have a parabola shape of some sort.