RT-20 Antimateriel Sniper Rifle

[Sayeret]

I thought some people might find this interesting.

http://world.guns.ru/sniper/rt20_1.jpg

http://world.guns.ru/sniper/sn56-e.htm

[MBG]

I'd hate to get in the way of that.

[Anthony91]

I saw that gun about a year ago, and I said to myself.....WTF!!!!

[Arty]

It's all becoming very penial.

[Irish]

It's all becoming very penial.
if you were in front of that you may bend over and kiss your A** gudby!!

[Lt-Col A. Tack]

20mm...should upgrade to 25mm XM109.

It's been mentioned a few times on this site, but for those of you who haven't seen it:
http://media.popularmechanics.com/images/lg_xm109-lg.jpg

Soldier Tech Article:
http://www.military.com/soldiertech/0,14632,Soldiertech_XM109,,00.html

[Jippo]

Just to let you know, 20mm Hispano is muuuch more powerful round than the 25mm in XM109...

-jippo

[LORD_BUNGLA]

those bullets look like dildos hehe

[Lt-Col A. Tack]

Just to let you know, 20mm Hispano is muuuch more powerful round than the 25mm in XM109...

-jippo
Seriously? I was looking at the ranges for both weapons and I thought the 25x59b OCSW round the Barrett used had a range of 2000 meters, and the 20x110mm Hispano had a range of about 1800 meters. Admittedly, not much difference difference.

I honestly don't claim to know much about these large caliber rounds.

[American Patriot]

Both of them seem to have similar muzzle velocity.

[JoaMei]

Both of them seem to have similar muzzle velocity.

No, but because of airbursting XM109 is even effective if it wouldnt be a direct hit. So the effective range should be greater.

[Lt-Col A. Tack]

No, but because of airbursting XM109 is even effective if it wouldnt be a direct hit. So the effective range should be greater.
You would think so, but I'm not sure if the airburting round has been developed yet: http://www.smallarmsreview.com/pdf/payload.pdf

At the time the article was written (2003), only target practice (TP) rounds were available. The author also thought that point detonation (PD) rounds would be sufficient and would cost less that the airbursting.

[Jippo]

Both of them seem to have similar muzzle velocity.

Well Hispano is 10% faster with 130gram round, and I have never seen the weight of the projectiles anywhere for 25mm. But just look at the capacity of the shell casing: it should be impossible to get such energy out of the 25mm shell.

Of course XM25 does not rely on kinetic penetration when used against armor, but still.


-jippo

[Greek soldier]

20mm...should upgrade to 25mm XM109.

It's been mentioned a few times on this site, but for those of you who haven't seen it:
http://media.popularmechanics.com/images/lg_xm109-lg.jpg

Soldier Tech Article:
http://www.military.com/soldiertech/0,14632,Soldiertech_XM109,,00.html

Oh yeah!!! The M82 is called "Nemesis" in our Special Forces woot

Maybe they will go for this toy too!!!

[Uninen]

That 1800m for HS is only for certain kind of HE shell, that will selfdestruct at about that range, well rather certain ammount of time since fired but it tends to be at about that 1800m when it happens.

And the velocity of HS ammo is depending on the type and with what its fired from 750 to up to 1000 m/s. So HS velocity is about the same or up to 20% higher.

But if we are talking of purely impact triggered HE to that 25mm thing it would be possible to load more efficent explosive charge, but i think there is no such thing for this particular weapon system?

[Limeyfellow]

Theres also the NTW20 20mm Anti-Material Rifle from South Africa but that has only(?) a range of 1500 metres but the barrel can be exchanged to 14.5mm russian and go up to 2300 metres effective range. Weighs as much as a tank though at 26kilos.

http://world.guns.ru/sniper/ntw20_1.jpg

It makes you wonder what these people are shooting with these rounds

[Lt-Col A. Tack]

Oh yeah!!! The M82 is called "Nemesis" in our Special Forces woot

Maybe they will go for this toy too!!!

We're always happy to sell to friends :)

What amazed me was the side by side comparison of the XM109 and the M82 in the pdf article. The payload rifle (25mm) looked to be about half the length of the M82 (12.7mm)

Of course in America, you can buy an M82 for yourself, that is, if you happen to have the $7,775.00 retail
(and are will to go through all the permitting)

[JoaMei]

Theres also the NTW20 20mm Anti-Material Rifle from South Africa but that has only(?) a range of 1500 metres but the barrel can be exchanged to 14.5mm russian and go up to 2300 metres effective range. Weighs as much as a tank though at 26kilos.

http://world.guns.ru/sniper/ntw20_1.jpg

It makes you wonder what these people are shooting with these rounds

Radars, Scud launchers or similar, ATGM-Launchers, Unarmored or light armored Vehicles, Vision Blocks or periscopes of Tanks...

Everything what is good and expensive on the Battlefield, and they are used for EOD too.

[Lt-Col A. Tack]

More info on the 25mm Ammo

http://www.globalsecurity.org/military/systems/munitions/images/xm307-25mm.gif

From:http://www.globalsecurity.org/military/systems/munitions/25.htm


Armor Piercing: http://www.globalsecurity.org/military/systems/munitions/m1049.htm
Specifically mentions the XM109

High Explosive Air Bursting (HEAB) ammo for the XM25 and XM307 systems:
http://www.globalsecurity.org/military/systems/munitions/m1019.htm
I don't think the XM109 has the electronics for it.

[Limeyfellow]

You would really hope a 25mm armour piercing high explosive round could go through pasgt armour and helmets and considerably more after it.

[Lt-Col A. Tack]

You would really hope a 25mm armour piercing high explosive round could go through pasgt armour and helmets and considerably more after it.
I think they're referring to the fragments from the 25mm airbursting munition.

[thatguy96]

I thought the 25mm ammunition for the XM307 was longer than that for the XM109 and the XM25? I'm pretty sure its not the same ammunition.

edit- Correction, the ammunition for the XM307 and XM109 is the same, but the XM25 and XM29 use the shorter 25mm cartridge.

[GazB]

Theres also the NTW20 20mm Anti-Material Rifle from South Africa but that has only(?) a range of 1500 metres but the barrel can be exchanged to 14.5mm russian and go up to 2300 metres effective range. Weighs as much as a tank though at 26kilos.



It makes you wonder what these people are shooting with these rounds

These are anti material weapons. Generally they would be used against parked aircraft, missile launchers (SAM or Ballistic or whatever), VIPs in cars or on the battlefield, Radar antenna, external power supplies for vehicles, command centres, or anything of a military nature.

The 20mm model is useful because of its HE payload and the fact that being a direct fire weapon it is capable of putting HE on target accurately at ranges where small arms return fire is useless. The 14.5mm is better at penetrating armour or hitting hard targets and would likely be used at 1,500m to 2,000m at most, though it is a very powerful round with twice the muzzle energy of the US 50 cal design and could probably be used out to 2,500m against certain targets. At 500m you could take out M1A2 abrams from behind (by damaging the engine), so T-55s and T-62s and T-72s and any other tank would also be a viable target from behind too. (The rear of the turret is a vulnerable place on almost all tanks as well, not to mention in built up areas from upper floors a shot down on the roof of a tank would be very effective too).

[Tony Williams]

A few facts and figures:

The 'medium velocity' 25mm grenade round as used in the XM109 and XM307 fires a shell weighing 132 g at 425 m/s

The 20x110 Hispano used in the RT-20 fires shells of around 120-140 g at 800-850 m/s from cannon barrels (it would be less from the RT-20, but still one heck of a lot more than the XM109)

The 20x82 fired by the Mechem NTW-20 (actually based on the WW2 Mauser MG 151/20 aircraft round) fires 110g projectiles at around 720 m/s (from the cannon).

Tony Williams: Military gun and ammunition website (http://www.quarry.nildram.co.uk) and discussion forum (http://forums.delphiforums.com/autogun/messages/)

[Uninen]

A few facts and figures:

The 'medium velocity' 25mm grenade round as used in the XM109 and XM307 fires a shell weighing 132 g at 425 m/s
OK.. the page this one fellow got his photos and info from talked of "2600 feet per second", and that would be around 800m/s. Thanks for the correction.