I noticed the error but wasn't sure exactly how close to 9mm a .357 diameter bullet was. Turns out it is 9.067mm. He may have meant to say 9.065mm and left out a zero.
I think he just assumed that .38 caliber meant O.3800".
I noticed the error but wasn't sure exactly how close to 9mm a .357 diameter bullet was. Turns out it is 9.067mm. He may have meant to say 9.065mm and left out a zero.
155 posted on 02/02/2006 6:55:05 AM MST by yarddog
9mm is .355
.38 is .357
9mm mak is .365
10mm is .40
Re 155: "wasn't sure exactly how close to 9mm a .357 diameter bullet was."
Actually the old .38 Long Colt was a bit larger in diameter than the modern .38/.357.
It was a soft, hollow based bullet of about .368" (IIRC) and fired through a true .38" bore, relying on the expanding HB bullet to fill the bore and take the rifling, much like a Mine' ball in a Civil War rifle. It was a "heeled" bullet, with a reduced diameter base that fitted into the mouth of the case.
The old .455 Webley used a similar system, which is why the ones converted to .45ACP don't shoot worth a darn.
A .38 Spl. will chamber in a 1901, but won't shoot at all accurately, unless you use a hollow based wadcutter round.
The '01 I used as a teenager in NH was deadly accurate with those, and I once popped a snoweshoe rabbit at about 100 yards with one round. I just had to hold about 2 feet low.