When .50 Cal isn't enough...

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MrTwigg

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I found this earlier today and thought you folks might enjoy it.

For some long-range sniper missions, a .50 caliber (12.7mm) round just isn’t big enough. The Barrett company, which pioneered the development of the modern .50 caliber sniper rifle, has now built a 25mm sniper rifle (although shoulder cannon may be a more precise term), the XM109. Ten prototype weapons are being made available for testing this month. Designed to destroy light armor, the XM109 is a semi-automatic 25mm rifle that has a 17.6 inch long barrel and an overall length of 46 inches. It weighs in at 46 pounds and has a 5 round magazine. In comparison, the Barrett M107 .50 caliber sniper rifle in general use today has a 29 inch barrel, overall length of 57 inches, and weighs in at a mere 32 pounds, with a magazine capacity of 10 rounds.

A spiked bipod is included to steady the XM109 for firing and it has a standard M1319 accessory rail for scopes and other accessories. Barrett will either sell a complete rifle or supply upgrade kits to convert the M107 .50 sniper rifle over to the 25mm configuration, replacing the bolt, upper receiver, and magazine.

To complement this “rifle” is a computerized sight called the BORS (Barrett Optical Ranging Sighting System). BORS is specifically designed for long-range shooting at 1,000 meters and longer distances, measuring and compensating for air pressure, temperature, and the angle of the weapon in relation to the target. Precisely compensating for all these factors and successfully hitting the target on the first shot is possible, but difficult. BORS is designed to take all the sweat-math work out of first-round shots, leaving the operator with simply dialing in the distance to target, selecting the ammunition type, and putting the cross-hairs on the target. Future versions of BORS will incorporate a rangefinder, and night vision capability.

Effective distance armor piercing “lethality” for the rifle is listed at 2000 meters. The 25mm round is derivative design from the AH-64 Apache helicopter’s M789 high-explosive dual purpose (good against armor and personnel) 30mm ammunition and will penetrate at least 50 millimeters of armor plating, making it capable of destroying light armored vehicles, SCUD launchers, and other equipment. According to the ammunition manufacturer, the 25mm round is 2.5 times more effective at destroying targets than a .50 caliber armor-piercing round. At some point the system will also be integrated to use 25mm airburst ammunition designed for the OCWS.

One drawback to the weapon is the heavy recoil of the round. Barrett is working on reducing the recoil. Finally, a company slide describes the weapon as a “payload rifle” and also alludes to the ability to remove the muzzle break and replace it with a sound suppressor. – Doug Mohney
 
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25mm=BAD ASS WEAPON

Ok, so we can all agree that more firepower is generally the goal in a weapon like this but I am wondering, what percent of engagments
A. Happen at 1500+ meters
B. Are situations where the .50cal wont do the job
c. are worth the soldier adding even more weight to their load

It just seems that in modern combat AKA Iraq and Afganistan snipers are playing a different role. Anyway I would love to hear some feed back on this.

BTW check out the GunCast on Itunes. Free podcast all about the love of guns.
 
These types of weapons can be used as so called anti-material weapons. The idea being that they could be used to take out key pieces of equipment with high precision and with little to no damage to other nearby things. Electrical sub-station equipment, transformers, radars, key equipment at TV and radio stations, key equipment at factories and utilities, and so on, are all things that this type of weapon could be used on.

If you want to damage and temporarily disable the various infrastructures of a city; this is one of the weapons you might deploy. You can destroy a TV station with a 500 pound bomb or you can use this weapon to knock the TV station off the air and then bring in people afterwards to fix a few things to get back on the air.

Of course it can be used against traditional military equipment as well.
 
So, how much will it cost?

I mean, there's no way I will ever be able to afford it, but I can at least daydream about it when I'm playing the "If I ever win the lottery" game.
 
Now THERE's a rifle to take up against them 600lb grizzlies! :evil:

For them little black bears, you can make do with Barrett's 50BMG CQB rifle.
 
Agreed, this finally answers the age old question of which is the best rifle for defense against grizzlie attack. Might even be enoug for across canyon elk. ;)

Those California cops are going to cry when they see all the other state PDs (including Mississippi, Arkansas, Mew Mexico, etc.) gearing up with a 25mm and Barrett won't sell them one. :neener: The perfect dynamic entry weapon because you can enter and clear the room from 2,000 yds out.

I want to see the reloading press and dies for this momma!
 
People will definatly be reloading...
If the nice .50BMGs go up to $5 I imagine this one is going to be around $15 per shot. =D
 
From what I understand Barrett was having problems with recoil on the rifle and was trying to develop a muzzle brake that would lighter the recoil to a reasonable level.
 
Gifted,
Those 25mm rounds will do way more damage then a .50 Cal SLAP round. Plus most .50's can't even chamber a SLAP round, Barrett made special M82's with a SLAP chamber and opened up the muzzle brakes for them.

The .50 SLAP is a .30 cal. tungsten penetrator weighing 355grs., compare that to one of those 25mm rounds and you get the point. The SLAP rounds are cheaper but the number needed for the same effect would probably off set that.
 
The trick to long range shooting isn't measuring the distance and turning an elevation knob. It is figuring out the wind. Until you start to pack in a Dopplar radar that can measure the wind at all points along the flight path (remember that the bullet may be 20 feet above the line of sight at some point), consistant first round hits beyond 1500 yards are more luck than skill. Even the guys that have taken elk at over 2000 yards use a spotter round that isn't advised in hostile situations.

On the other hand I can see where a bigger round may have it's place in a few situations against hard targets.
 
Ok, so we can all agree that more firepower is generally the goal in a weapon like this but I am wondering, what percent of engagments
A. Happen at 1500+ meters
B. Are situations where the .50cal wont do the job
c. are worth the soldier adding even more weight to their load

Add to that...where you can't get a Bradley or some other cannon equipped vehicle to do the job.

I'd have to guess this is intended for SOF applications of some sort.
 
Just looking at the rounds and seeing that it's only got a short 17.6" barrel, muzzle velocity must be quite low, making for a rainbow-like trajectory.

Wonder what the ballistic coefficient would be . . . and its sensitivity to cross winds.

This sounds more like a future replacement for a 40mm grenade launcher than it does for a sniper rifle . . .
 
I can see use for this in the Airborne. Something with a little longer range then a AT4 and can take out armour when you do not got any.
 
My understanding of this system was that it's a relatively low velocity deal. It just lobs the round out there more like a grenade launcher.


If it was launching a 25mm round at 3000ish fps there would be no way they could keep the recoil in check. As I understand it, the 20mm Lahtis are just barely tolerable.

EDIT: Plus, its fairly obvious from the pictures that its case volume is way too low for it to be a high velocity round. So yeah, its like a cross between the 50cal and a grenade launcher........
 
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