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9/19/2017 7:27:10 PM
Posted: 7/31/2001 6:08:38 PM EDT
.357 = 38 Cal. All other Cals. go by bore size ie .45 cal. = .451 Pistol .45 cal. = .458 Rifle .22 cal. = .224 etc etc. Why is the 38 out of wack???? And is it only the .38 cal thats this way. I can't think of any others. Anybody know
Link Posted: 7/31/2001 6:20:39 PM EDT
Link Posted: 7/31/2001 6:24:25 PM EDT
The .38 Special was introduced at the turn of the century. It utilizes a true .357 caliber bullet. The .38 Special has roots that go back to the 1880's in the .38 Long Colt, which underwent a major redesign (but no name change) from a 375 thousandths of an inch bullet to about a .363 caliber bullet. When Smith redesigned the cartridge, they used an even smaller bullet about .357 caliber. In order to capitalize on the name of the well-known military pistol round they had just redesigned, they kept the "38" part of the name.
Link Posted: 7/31/2001 8:29:11 PM EDT
Then there's the .44 Mag. Same kinda deal. 44 mag = .429 Only .015 difference, not the .028 you we're talking aobut. Just how big of a difference should make the list? .30 cal stuff ranges from .307 up to .312 depending on bullet make and type. It's a real jungle out there. Are there any other obvious examples?
Link Posted: 7/31/2001 8:49:21 PM EDT
Link Posted: 7/31/2001 8:53:39 PM EDT
its the same with snowmobiles and motorcycles. 440 is usually more like 337 ect...
Link Posted: 7/31/2001 9:01:59 PM EDT
And lets not forget the Harley Sportster 900 is really 883. Harleys and BMWs the only way to fly, on the ground that is.
Link Posted: 7/31/2001 9:29:55 PM EDT
I'm not sure how true this is because I've never checked but I've heard that the only difference between a .38 and .357 is where it is measured. A .38 is measured at the outside of the rifling where a .357 is measured on the inside. Don't quote me on this. Maybe I'll mic. it out one of these days.
Link Posted: 7/31/2001 9:53:40 PM EDT
Originally Posted By Sydwaiz: I'm not sure how true this is because I've never checked but I've heard that the only difference between a .38 and .357 is where it is measured. A .38 is measured at the outside of the rifling where a .357 is measured on the inside. Don't quote me on this. Maybe I'll mic. it out one of these days.
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They both are .358
Link Posted: 8/1/2001 7:18:47 AM EDT
Originally Posted By gardenWeasel:
Originally Posted By Sydwaiz: I'm not sure how true this is because I've never checked but I've heard that the only difference between a .38 and .357 is where it is measured. A .38 is measured at the outside of the rifling where a .357 is measured on the inside. Don't quote me on this. Maybe I'll mic. it out one of these days.
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They both are .358
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If the inside and outside of the rifling are .358 then it would be a smoothbore and wouldn't have rifling. Right?
Link Posted: 8/1/2001 8:50:39 AM EDT
[Last Edit: 8/1/2001 8:48:25 AM EDT by Princeton]
I don't remember where I heard this but I was always under the impression that the original parent cartridge of the .38 Special (maybe something like the 38 S&W) was designed like the .22 rimfire. The bullet was actually .380 in diameter as was the outside of the brass case and the bullet was held into the case by its narrower base. Then when the move to smokeless powders and center primers the bullet size was reduced. Kinda the same reason a .22 Rimfire and a .22 Magnum are not compatible. Any truth to this?
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