Is there a 5.56 bullet that can penetrate like .300 BLK SS?

General Firearms Terminal Ballistic Information
1

Penetrate things like auto’s and common building materials.

I’m considering downsizing from .308 and getting a .300 blk or maybe a 7.62x39. But if a 5.56 bullet could penetrate materials similarly that would be a simpler way to go.

I’m pretty sure the answer is already, “No.” but I just thought I’d check. (Yes, I know, M995. can’t get that).

2

You mean, like meet the testing standards the FBI uses for pistols? (Don’t recall if they do the same for rifle)

3

Just in general.

4

The Federal 62 grain bonded soft point (T3 variants) rounds are barrier blind. Performance through glass, metal, sheet rock, etc… is very good. There are a lot of test results out there on the interwebs if you look.

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5

Thanks. I’ll check that out.

But i couldn’t resist and have a .300 blk coming. Need to choose & order ammo because i have no .300 blk. Need to keep it out of my 5.56 chambers.

6

Pretty sure the Hornady 5.56 75 Grain TAP LE is supposed to pass FBI barrier protocol testing.

7

This is an old list from DocGKR

"If barrier penetration IS an important factor:

  • 62gr Federal Trophy Bonded Bear Claw (TBBC) bonded JSP (XM556FBIT3)*****
  • 64gr Winchester solid base bonded JSP (Q3313/RA556B)*****
  • 50gr TSX loaded by Black Hills*****
  • Speer 55 & 64gr Gold Dot JSP (5.56)*****
  • Federal 62gr Mk318 Mod0 (T556TNB1)*****
  • 62gr Federal bonded JSP Tactical (LE223T3)
  • 55gr Federal bonded JSP load (Tactical––LE223T1 or identical Premium Rifle––P223T2)
  • Swift 75gr Scirocco (usually requires 1:7 twist)
  • 60gr Nosler Partition JSP
  • Remington 62gr bonded JSP
  • Federal 55gr TSX (T223S)
  • Speer 55 & 64gr Gold Dot JSP (.223)
  • Federal 62gr Fusion JSP (Same construction as the Gold Dot)"
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