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Busier than a cat covering
crap on a marble floor
Picture of Z06
posted


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The trouble with trouble is; it always starts out as fun.
 
Posts: 4333 | Location: AZ | Registered: July 18, 2011Reply With QuoteReport This Post
Fighting the good fight
Picture of RogueJSK
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Interesting. What made you decide to go with 5.7 for home defense?

Every LE agency I know of that dallied with 5.7 in the 1990s and 2000s ended up ditching it fairly quickly, with poor terminal performance being a primary factor. That includes one of our local teams, who briefly had some P90s ~20 years ago before ditching them within a short time for initially 9mm MP5s and later short barrel 5.56 ARs.

The MP7 and its similar "tiny but fast" 4.6 round seems to have taken the same path, with a initial burst of enthusiasm among the high speed types before being dropped by many of them due to the same performance issues.


Edited to add this link: https://pistol-forum.com/showt...-FN-5-7-mm-HK-4-6-mm

(The "large federal agency" referenced there as also dropping the P90 due to poor terminal performance of the 5.7 round is the Secret Service.)

That post has some anecdotes from a couple of .Mil and LE real-world users of the 5.7/4.6, as well as the thoughts of DocGKR, a trauma surgeon who is considered one of the foremost experts in the country on bullet terminal effectiveness, and who frequently consults with LE and military groups on wound ballistics. Here's his bio:

quote:
“Dr. Roberts is currently on staff at Stanford University Medical Center, a Level I Trauma center and teaching hospital. After completing his residency at Navy Hospital Oakland in 1989 while on active military duty, he studied at the Army Wound Ballistic Research Laboratory at the Letterman Army Institute of Research and became one of the first members of the International Wound Ballistic Association. Since then, he has been tasked with performing military, law enforcement, and privately funded independent wound ballistic testing and analysis. He remains a Navy Reserve officer and has recently served on the Joint Service Wound Ballistic IPT, as well as being a consultant to the Joint FBI-USMC munitions testing program and the TSWG MURG program. He is frequently asked to provide wound ballistic technical assistance to numerous U.S. and allied SOF units and organizations. In addition, he is a technical advisor to the Association of Firearms and Toolmark Examiners, as well as to a variety of Federal, State, and municipal law enforcement agencies. He has been a sworn Reserve Police Officer in the San Francisco Bay Area, where he now he serves in an LE training role.”

This message has been edited. Last edited by: RogueJSK,
 
Posts: 33370 | Location: Northwest Arkansas | Registered: January 06, 2008Reply With QuoteReport This Post
Busier than a cat covering
crap on a marble floor
Picture of Z06
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It is my favorite currently due to the ease I have in handling and hitting targets better than with my 9mm SIGs and .357 revolvers. Recoil and (with suppressor) muzzle flash (640 mostly) is very good. I use Federal Personal Defense 5.7x28mm 40 Gr. J.H.P. and have 4 20 rnd. and 6 30 rnd magazines for it. At 77 I feel more comfortable with the MK2.
I realize there are better choices for ultimate defense. There always is.


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The trouble with trouble is; it always starts out as fun.
 
Posts: 4333 | Location: AZ | Registered: July 18, 2011Reply With QuoteReport This Post
Fighting the good fight
Picture of RogueJSK
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That's valid. Low recoil is one of the main benefits of the 5.7/4.6 rounds.

Everyone's situation is different, and if recoil/controllability is a primary factor then that would certainly bump calibers like 5.7 up in the list of potential options.
 
Posts: 33370 | Location: Northwest Arkansas | Registered: January 06, 2008Reply With QuoteReport This Post
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To each his own, so enjoy. As someone who went all in on 5.7 initially, and loved it, but then later went suppressed on everything lost the love. 5.7 sucks suppressed. At least compared to the alternatives all of which have better ballistics. But be happy and enjoy your choice so this isn't a criticism.
I use a dedicated 5.7 suppressor designed solely for 5.7 but have heard that many of the .22 cans rated for 5.7 don't do so well. But not personal experience. Its a fun round but its not my HD choice.


“So in war, the way is to avoid what is strong, and strike at what is weak.”
 
Posts: 11248 | Registered: October 14, 2004Reply With QuoteReport This Post
Busier than a cat covering
crap on a marble floor
Picture of Z06
posted Hide Post
99% of the shooting is w.o. suppressor.

The TAC SOL Axiom is 5.7 rated and I got this one in a will. It is if I ever need to use it indoors w.o. benefit of hearing protection. I have bad enough hearing now.


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The trouble with trouble is; it always starts out as fun.
 
Posts: 4333 | Location: AZ | Registered: July 18, 2011Reply With QuoteReport This Post
Frangas non Flectes
Picture of P220 Smudge
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Rogue, some of the defensive rounds available now were not available then. Gold Dots for one, and Hornady FTX Critical Defense for another. Even FN’s SS198LF lead free does nasty stuff to unarmored flesh, and that stuff wasn’t around in the timeframe you mention. That’s not even getting into some of the small ammo manufacturers playing around with various solid copper rounds.


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“There are plenty of good reasons for fighting, but no good reason ever to hate without reservation, to imagine that God Almighty Himself hates with you, too.”
 
Posts: 17856 | Location: Sonoran Desert | Registered: February 10, 2011Reply With QuoteReport This Post
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P220Smudge you are confusing two issues. First can 5.7 be lethal, why yes it can (I always point people to the Ft. Hood shooting for an effectiveness discussion). Is it reliably lethal? Probably not at least from people who do this for a living as the number of people who have adopted it initially and dropped it is pretty high, and the number of new adapters among those that have to have good lethality is very low. But the OP posted this in suppressors with a .22can. Does 5.7 suppress well. Well with a .22 can no. Does it suppress well with cans actually designed for it? Well at least with the B&T can no. Does it suppress well if you hang a full size 5.56 can on it? I don't know, but probably does but then what's the point.
The bottom line to me is that you can have something that's more effective, quieter and you don't have to give up much of the 5.7 advantages to get that. That's not a criticism of the OP's choice and his tradeoff's, its just based on personal experience with tens of thousands of 5.7 rounds of personal experience and my tradeoffs. I love the 5.7 but for HD I'm not picking it with a .22 can.


“So in war, the way is to avoid what is strong, and strike at what is weak.”
 
Posts: 11248 | Registered: October 14, 2004Reply With QuoteReport This Post
Busier than a cat covering
crap on a marble floor
Picture of Z06
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The 2-gun indoor set


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The trouble with trouble is; it always starts out as fun.
 
Posts: 4333 | Location: AZ | Registered: July 18, 2011Reply With QuoteReport This Post
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