Thread: 6.5 Creedmoor

Originally Posted by janleroux

At what sort of range you recon the projectiles could turn back and still be dangerous?

This is what a centerfire does to the mild steel plate. What will a .22 do it?


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I was surprised to see my 223 with 69gr SMKs cut effortlessly through 8mm mild steel at 100m.
Soft points dented the hell out of it, my the SMKs bore clean holes straight through.

Originally Posted by rewa

The US-Military did tests back-in-the-day, with 7.62 nato, a bunch of other calibers, and 6.5x55. They fired into compressed-damp sand. I dont know the range, but the 6.5x55 won the penetration-test and out-penetrated the 308 by 9" !.. And that is why 120gr is more than enough for any Deer, in 6.5cal...the rest go straight-through unless they hit something substantial, and at very long-range, they can sometimes be too slow, to expand properly

Originally Posted by Beetroot

I was surprised to see my 223 with 69gr SMKs cut effortlessly through 8mm mild steel at 100m.
Soft points dented the hell out of it, my the SMKs bore clean holes straight through.

I always thought armour piercing rounds was all about what the tip was made off (ie some hardened steel tip or similar). But this means that a special projectile at a very high velocity will go through for example a vehicle quite easily.

Interesting stuff!


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Originally Posted by janleroux

I always thought armour piercing rounds was all about what the tip was made off (ie some hardened steel tip or similar).

If you break it down (same caliber, same velocity, different projectile), it all comes down to sectional density (SD).
That's why the SMK (SD 196) was going through steel and the PSP (typical SD 157) only dented it.