FN 5.7 Handgun

[atblis]

CS

It works well in Counter Strike as well.

 

[Styerwaytoheaven]

Timbokhan

Re: "...Sorry buddy. Say what you want, but the Fiveseven is an ugly pistol. If you think it's cool, well, good for you. I have had to put up with listening to people for years calling my P90 ugly, and thanks to the FiveseveN, that abuse has tapered off..."

The p90 IS ugly as hell; but it is still one of the coolest weapons ever! I guess I have a thing for ugly. Momma always told me that it's what's on the inside that counts.

 

[Chindo18Z]

Originally Posted: October 27th, 2006, 10:08 AM

Medula Oblongata: I have no dog in this debate and no valid opinion about this caliber...just trying to learn. I'll check out your recommended forum link.

That said, I have two questions:

1. Who in USSOCOM is using this pistol or this caliber?

2. Bullet yaw? Check...got it. But, how does the bullet achieve reliable fragmentation in flesh at 2000 fps vs. the 2700+ required (for example) for M193/M855 5.56?

Edited to Add Two More Questions:

3. Or...Does 5.7 FMJ even fragment after flesh penetration and subsequent yaw?

4. With comparable bullet weight and diameter, how dissimilar are FMJ 5.7 x 28 and 5.56 NATO projectiles (in terms of construction, jacketing, length, core, etc.)?

I'm just re-looking the concept after not paying much attention to 5.7 for the last couple of years. I'm interested in this caliber's performance as a pistol round...


__________________

 

[NORTEXED]

My inquiry was based on the assumption that the 5.57 was relying largely on yaw and tumble for wound characteristics. Most small caliber projectiles do for terminal wound effect (based on the assumption that the projectile is sturdy enough for serious penetration, and not designed to fragment). I know with the 5.56, the faster twist rates in the A1,A2,A3 are necessary to stabilize the heavier 62gr. bullets at the velocity attained in the 20" barrels. Projectile stability is a factor of balistic coef., twist rate, velocity, weight distribution in the projectile. It is all a balancing act, to twist the bullet fast enough to stabilize at "intended velocity", but not overstabilize it to the point that it pokes pencil holes in and out. This was the basis of the M4 debate, the shorter barrels "apparently" gave up enough initial velocity that the projectiles overstabilized, and gave up wound effect. While the old 1 in 12's did not stabilize the 62 gr's enough, with the 55's, they pitched and yawed easily in target and still maintained acceptable accuracy. The 9.5 twist seems fast for such a light 5.57 mm projectile, and would seem to "overstabilize" the projectiles and hurt wound effect. Once again, the age old struggle is to stabilize the projectile to obtain acceptable accuracy, but not so much as to give up wound effect. Am I off base?

 

[Chindo18Z]

Medulla Oblongata: Thanks for answering my questions.

Very informative and I found out what I needed to know.

 

[loki.fish]

I'm assuming the ballistic tip ones are the SS197's?

Have there been any tests done with the SS197's to see if they'd penetrate heavy winterlike clothing? If they cause such a violent wound channel, they'd be pretty ideal for self-defense rounds, but will they fragment early if hitting heavy clothing?

I just got home from a 12 hour shift, so if you can't understand what I'm saying, sorry.

 

[M2 Carbine]

Medula Oblongata,
I've searched but haven't been able to find the answer to this question, so I'll ask you here.

When sizing the brass the case coating causes the case to stick so bad in the die that I'm almost tearing off the case rim.
My normal sizing lubes don't help much.

This has brought my 5.7 reloading to a stand still because I don't want to wreck the little brass I have.

Do you know of a solvent, paint remover, etc that will remove the coating on the brass?

From what I understand the coating is necessary for the carbine but not the pistol.

 

[M2 Carbine]

I have RCBS dies and have been using Midway Spray N Lube for a long time sizing .223, 30.06, etc, with good results.
The 5.7 is sticking bad though. I even tried other oils that I had around, with no luck.

It just so happens I'm into RC models and I have a pint of Castor Oil in the shop.
I tried sizing about 15 cases.
Works good.

I'll also give the Hornady 1shot and Lee resizing lube a try.

Thanks.

 

[Stinkyshoe]

MO
To have loaded and shot 45K rounds of 5.7, how many years have you been shooting the 5.7? Just in the Hanedgun, or in the rifle too?
Thanks
Ss

 

[panzermk2]

Awhile back some asked about what tip was the SS197. This should help

 

[Stinkyshoe]

MO,
Wow! That's a lot of shooting! That's great! I doubt I've shot that many 22 LR in my life so far (but I am not too old, maybe I can catch up...)
How many loadings can you get out of one piece of brass? Do you get all your brass from the originally fired round that you buy or from other people too? What is your favorite load? Are you taper crimping your rounds? I assume you are using some sort of progressive system...?
The owners manual on the 5.7 pistol says it's affective to 55 yards (50m). Do you have much experience from longer distance shootin of the 5.7? What's it like? Did the Jarvis barrel improve that accuracy and long distances?

Thanks Again,
Ss

 

[Stinkyshoe]

That's cool man. I hear ya. I'll join the forum soon and ask to my hearts content (but use the search function first )

Later,
Ss

 

[Curare]

Until recently I was shooting between 2 and 3k per week between 45 and 5.7

Don't ask...

At the low end (2000 rds/wk of only .45), that's $200/wk ($10/50) or roughly $10000 on ammo a year.

At the high end (3000 rds/wk of only 5.7), that's $720/wk ($18/50) or roughly $36000 on ammo a year.

Your department has a large enough budget to spend $10000-$36000 a year on one officer's ammo budget?

Are you exagerating a bit here, or is this another "destroyed" pelvis?

 

[panzermk2]

Quote:
Until recently I was shooting between 2 and 3k per week between 45 and 5.7

Don't ask...
At the low end (2000 rds/wk of only .45), that's $200/wk ($10/50) or roughly $10000 on ammo a year.

At the high end (3000 rds/wk of only 5.7), that's $720/wk ($18/50) or roughly $36000 on ammo a year.

Your department has a large enough budget to spend $10000-$36000 a year on one officer's ammo budget?

Are you exagerating a bit here, or is this another "destroyed" pelvis?

The only person full of it is you. exaggerating correct spelling, that was the word used by the Dr. Don't like it look up the court records and contact the doctor.

MO Hand loads most all of the ammo he shoots instead of watching survivor or TV. Please feel free to tell Me were you want to meet so you can call my friend a liar to my face.

 

[Stinkyshoe]

Curare,
You seem like you want to attack someone. Previously, MO and the other gentlemen who is a Xray expert discussed the pelvis thing and seemed to conclude that this was a case of semantics more than anything. I believe that was settled a while ago, so there is no need stir the pot(unless you like getting messing) As far as the ammo thing goes, I believe MO previously mentioned that he can reloaded 5.7 for $8/100 and he can likely load 45 acp for around $7/100 cause thats about what it costs me to reload it (negating the price of brass). So if he were to shoot 1000rds of 45 and 1000 rds of 5.7 on a normal week, we are looking at $150/per week. That's probably a little more than I could afford being a poor college boy, but a professional man on sallary with some extra cash could probably do that for a while. (I must say that I am green with envy for someone who can shoot that much! ) I don't believe he implied he did this for week after week, because he said he has 45K through the FN. So obviously for a while the intensity of his training increased, and his claim is certainly feasible.

 

[Stephen A. Camp]

Name calling is not permitted on THR. If it just must be done, go to the PM's or other methods.