It's not even really armor piercing - just exceeds some silly formula Congress pulled out its ass to try to keep the so-called "cop killer" KTN or some such pistol ammo off the streets in the late 1980s. About the same time they passed the "undetectable firearm" law cause they were a-scared of Glocks and other poly-framed pistols.
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Gotta love the irony in the Gunbroker post:
Treating rifle ammunition or equipment as if it were for pistols just because some moron built a pistol in that caliber is ridiculous and I hate my rifles being handicapped because someone wants to prove how much testosterone he has by having a "pistol" in a rifle caliber. Hawaii "only" bans so-called "high capacity" magazines for pistols, not rifles, but ARs are restricted to 10 round magazines just like pistols because AR-platform pistols exist. I don't know what they do about the Mare's Leg line that was revived recently.Most manufacturers will not build these as they erroneously believe that 5.45 pistols could get the inexpensive 7N6 Russian surplus ammunition banned from import.
The best ammo I ever shot out of an AK or SKS was the copper washed Chinese steel core stuff. It shot through just about anything and was cheap: 750 round tin for $34.95. When some company imported an AK in pistol form the gov' banned the importation of all steel core 7.62X39 ammo. I hope no one produces a pistol in .30-06, I like my milsurp magnet attracting ammo.
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I don't think you have to worry, IIRC 30-06 was one of the rounds specifically exempted in said bureaucratic bs.
Can someone educate me on the definition of 22 cal and the actual caliber of a 5.45x39?
According to wikipedia the bullet diameter is actually 5.6mm. http://en.wikipedia.org/wiki/5.45%C3%9739mm . 1 inch is exactly 25.4mm http://www.elivermore.com/conversions.htm , so 5.6mm is equivalent to 0.220472 inches (is that the caliber? or is caliber defined from the rife bore?).
From statute...
So now 2 questions.(17) (A) The term “ammunition” means ammunition or cartridge cases, primers, bullets, or propellent powder designed for use in any firearm.
(B) The term “armor piercing ammunition” means— (i) a projectile or projectile core which may be used in a handgun and which is constructed entirely (excluding the presence of traces of other substances) from one or a combination of tungsten alloys, steel, iron, brass, bronze, beryllium copper, or depleted uranium; or
(ii) a full jacketed projectile larger than .22 caliber designed and intended for use in a handgun and whose jacket has a weight of more than 25 percent of the total weight of the projectile.
1) My google-fu may be bad, but is looks to me that the actual diameter of the 7N6 is less than that of a 22lr bullet. Does that mean it's less than a 22 cal round?
2) If 22 cal is defined by the strict diameter of the bullet, then it is less than 1/2 or 1/1000 of an inch over the line. Are russian tolerances loose enough that some fall to the other side of the line?
Please set me straight...
(edit) Never mind... I missed the other definition of AP. Still need education on caliber.....
(B) The term “armor piercing ammunition” means— (i) a projectile or projectile core which may be used in a handgun and which is constructed entirely (excluding the presence of traces of other substances) from one or a combination of tungsten alloys, steel, iron, brass, bronze, beryllium copper, or depleted uranium; or
Last edited by us1911; 03-30-2014 at 22:05. Reason: ready, fire, aim...
Here...an old thread off "the high road" forum, but it had what I believe to be the relevant info:
"Max VelocityJune 16, 2007, 11:42 AM
5.56 millimeters = 0.218897638 inches, but that is the BORE diameter which is the diameter measured at top of the lands. Bullet diameter for 5.56x45mm is actually .224" or 5.6896 millimeters which is barrel groove diameter.
5.45 millimeters = 0.214566929 inches, but the nominal bullet diameter for 5.45x39mm is 5.62mm (.221")
1 millimeter = 0.0393700787 inches
1 inch = 25.4 millimeters"
Thanks! Never thought of diameter at lands vs diameter in grooves. Makes sense now...