Quoted:
Quoted:
Quoted: Any reason known for Winchester choosing to use steel in this bullet? |
Yes....MONEY.
It is far cheaper to make a steel jacket and coat it with copper than it is to make a solid copper jacket. Only a thin coating is necessary to protect the bore from steel on steel contact, much like the thin film lubrication of an internal combustion engine. |
That is true. Lake City makes two types of M80 ball, one with gilding metal jacket, the other a copper-plated steel jacket.
One time, DocGKR mentioned to me that the steel-jacketed LC ammo actually fragments. You might try shooting it into some water to see what it does. If it fragments, you might have a heck of a SHTF round on your hands. |
Zhukov,
The recently available Federal commercial sales 7.62x51mm (308 Winchester) 149gr. loading is a steel jacket bullet in '07 FC NATO marked brass. I did not think it possible for steel jacketed round to fragment. Good info!
Also, it appears we may have broken the code on the Winchester 308/7.62mm 147gr FMJ ammo as far as gilded metal vs. steel jacket. Q3130 boxes marked 7.62x51mm have a magnetic steel jacket, but USA3081 boxes marked 308 Winchester are gilded metal jacket. Check some with a magnet before buying to be sure Winchester did not change bullet types.
I tested different lots of USGI WCC, LC, & FA 7.62x51mm FMJ ammo with a magnet. All 3 made both magnetic & non-magnetic bullet ammo.
Thanks,
Carey
Edit: Brass on the Federal XM80762 ammo was reported to be '07 LC, but on the Federal 7.62x51mm I received it is actually '07
FC NATO marked brass. This 7.62mm NATO loading has a Federal lot number, not LC.
Edited for accurate content.