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Posted: 2/24/2006 8:50:32 AM EDT
Afternoon All

I was wondering about these two factors in 5.56x45 round in the AR15 platoform. From various blogs, articles and forums I have gotten the sense that the 5.56x45 round does not demonstrate definitive stopping power per round out of the 14.5" barrels of the M4 carbine. With that said, can I assume that the lethality and reliability of the 5.56x45 round is also such in the 16" civilian version?

Also in comparison with the 20" stardard A2 or A4 versions I have heard no comments on it lacking "stopping power". Is it assumed that the extra 5.5" or 4" of of the A4 compared to the M4 or civilian AR15 carbine barrel, giving the additional 800fps or 600 fps (respectively), gives the round increased lethality?

Thanks
Link Posted: 2/24/2006 8:56:51 AM EDT
Crag,
Before going any further please read the following. Then come back with questions:
Ammo Oracle

Maryland AR-15 Shooters Site - 5.56 Performance FAQ
Link Posted: 2/24/2006 8:59:34 AM EDT
FYI you are not going to get an extra 600-800 fps from a 20" barrel. Whoever told you that is FOS. Going from a 20" barrel to a 16" barrel with M193 you lose 150 fps; going from a 20" to a 14.5" with M855 you only lose 130fps.
Link Posted: 2/24/2006 4:12:24 PM EDT
Shoot someone in the chest with one 7.62, they will likely die. Same goes for 5.56. Shoot someone in the arm with 7.62, they will likely live. Same goes for 5.56. Shoot someone in the leg with 7.62, they may or may not die, same goes for 5.56. Are you beginning to see a pattern?


Nothing is certain, not even .308. As a matter of fact, 5.56 does MORE tissue damage than 7.62 inside 150 - 200 yrds or so.
Link Posted: 2/24/2006 4:15:24 PM EDT

Originally Posted By 20iner:
Shoot someone in the chest with one 7.62, they will likely die. Same goes for 5.56. Shoot someone in the arm with 7.62, they will likely live. Same goes for 5.56. Shoot someone in the leg with 7.62, they may or may not die, same goes for 5.56. Are you beginning to see a pattern?


Nothing is certain, not even .308. As a matter of fact, 5.56 does MORE tissue damage than 7.62 (with stan mil FMJ) inside 150 - 200 yrds or so.


Fixed it
Link Posted: 2/24/2006 4:23:14 PM EDT
Within it's effective velocity range (over 2700 FPS) it is a devastating round. Out of a 16 inch barrel it's over 2700 fps out to approx 140 yards or so.
Link Posted: 2/24/2006 4:27:21 PM EDT

Originally Posted By TaylorWSO:

Originally Posted By 20iner:
Shoot someone in the chest with one 7.62, they will likely die. Same goes for 5.56. Shoot someone in the arm with 7.62, they will likely live. Same goes for 5.56. Shoot someone in the leg with 7.62, they may or may not die, same goes for 5.56. Are you beginning to see a pattern?


Nothing is certain, not even .308. As a matter of fact, 5.56 does MORE tissue damage than 7.62 (with stan mil FMJ) inside 150 - 200 yrds or so.


Fixed it



Thanks, you are correct. But it's probably even better with soft point I hear- I've heard of soccerball sized wounds in the chest cavity from a single 45gr .223 softpoint.
Link Posted: 2/24/2006 4:54:27 PM EDT
Universal truth = There is no magic bullet!
Link Posted: 2/24/2006 5:13:28 PM EDT
Ask all those dead Iraq's
Link Posted: 2/24/2006 5:17:18 PM EDT

Originally Posted By Big-FED:
Universal truth = There is no magic bullet!
hr


Nosler Ballistic Tips
Link Posted: 2/24/2006 5:25:40 PM EDT
[Last Edit: 2/24/2006 5:27:35 PM EDT by Brock63]
FMJ rounds do pretty good but if you ever see what a soft point round does in flesh it is devastating...the "contractors" mostly were carrying soft point rounds or hollow points in their weapons that I came into contact with...

I could not tell a bit of difference between the various barrel lengths...a 100-200fps difference did not have any measurable increase in effectiveness from what I could tell. The Iraqi militants or Taliban outside of Kandahar sure were not any deader between 16" or 20" barrels.
Link Posted: 2/24/2006 8:29:49 PM EDT

Originally Posted By Meat:

Originally Posted By Big-FED:
Universal truth = There is no magic bullet!



Nosler Ballistic Tips



What part of "Universal Truth" was confusing?


Link Posted: 2/24/2006 8:43:33 PM EDT
[Last Edit: 2/24/2006 8:44:15 PM EDT by ALPHAGHOST]

Originally Posted By Meat:

Originally Posted By Big-FED:
Universal truth = There is no magic bullet!



Nosler Ballistic Tips .50 BMGs

Link Posted: 2/25/2006 1:47:56 AM EDT
I was told by a NASA Space Shuttle Ninja Door Gunner(SSNDG) that 5.56x45 is the best, and thats why they use it and so should I ! ! !



Invisiblesoul
Link Posted: 2/25/2006 2:00:01 AM EDT
Link Posted: 2/25/2006 7:00:57 AM EDT

Originally Posted By Lumpy196:
www.joebrower.com/PHILE_PILE/PIX/FR/can_of_worms.jpg



MADE MY DAY>>>>> lol
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