Question for Ammo nuts about 5.45x39

[mosinnagant577]

Is this "steel core" ammo? I bought it a few years back and am just curious. http://uploads.tapatalk-cdn.com/20161227/daef2bf6cddbc86416c9eddaaaeb6f57.jpg

http://uploads.tapatalk-cdn.com/20161227/ab8b81ffba52e0589aef9c9caadea198.jpghttp://uploads.tapatalk-cdn.com/20161227/274ac44fc822aea4444e992656b5ff69.jpghttp://uploads.tapatalk-cdn.com/20161227/2b82521b0cc7b1dd4381a6f888beb6ba.jpg


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[CS1983]

does a magnet stick to it?

[mosinnagant577]

it does in fact

[ray1970]

Some of that stuff is hard to tell. Sometimes it will have a lead core but a bi-metal jacket and the magnet will stick to it.

[CS1983]

Some of that stuff is hard to tell. Sometimes it will have a lead core but a bi-metal jacket and the magnet will stick to it.

Right you are, sir... description here says bi-metal: http://www.jgsales.com/5.45x39-tulammo-60gr-fmj-ammo,-20rd-box.-p-4562.html ; and here: https://www.cheaperthandirt.com/product/tulammo-545x39-full-metal-jacket-polymer-coated-steel-case-60-grain-2936-fps-20-round-box-ta545390-814950011128.do

Nothing in descriptions mention a penetrator though.

[Circuits]

Only way to know is to section it. 59/60gr could have either an air-gap lead core bullet, or a steel flip-tip design like 7N6 and the like. Bi-metal jacket will attract a magnet regardless of whether there's a flip-tip steel insert.

[mosinnagant577]

Thanks guys!


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[spqrzilla]

The bimetal jacket means that you probably ought to treat it as steel core, in terms of where you can shoot it. This is because most ranges will test with a magnet and be done. I used to have a lot of trouble with 7.5x55mm surplus from RUAG which had no steel core but was bimetal jacket.

[Hoser]

If you are shooting at steel beware of the fire danger associated with steel core and bi-metal jackets.

[jmg8550]

Are bimetal jackets hard on barrels?

[Kaiser.Shooter]

Are bimetal jackets hard on barrels?
As a matter of fact yes, here's a test done by lucky gunner: http://www.luckygunner.com/labs/brass-vs-steel-cased-ammo/

[CS1983]

As a matter of fact yes, here's a test done by lucky gunner: http://www.luckygunner.com/labs/brass-vs-steel-cased-ammo/

Specific section: http://www.luckygunner.com/labs/brass-vs-steel-cased-ammo/#erosion

Wow, 6k rounds of viable service life. That's pretty low. Thanks for the link K.S; a lot of valuable info in there.