The ×45mm NATO (official NATO nomenclature NATO) is a rimless bottlenecked . The ×45mm NATO SS/M cartridge (NATO: SS; U.S.: M) with standard 62 gr. lead core bullets with steel . Luke Haag’s papers in the AFTE Journal (33(1)–28, Winter ) also describes this problem. Look at Luke Haag’s paper in the AFTE journal which shows significant variations in construction between various SS/M loads from. Now comes your affiant, Lucien C. “Luke” Haag, and under oath hereby states as follows: I. I am of legal majority and of x45mm SS/M Bullets”.

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In addition to not causing lethal effects with two or more rounds, they did not effectively penetrate vehicle windshields, even with many rounds fired at extremely close range. These problems have primarily been manifested as inadequate incapacitation of enemy forces despite their being hit multiple times by M bullets. The Army spent more developing the MA1 which performs as well or nearly as well as the Mk, but is cheaper per round and has the advantage of being lead-free.

Ballistics tests found that the round caused “consistent initial yaw in soft tissue” between 3 and 4 lukr at ranges from 15 feet to meters. Initial lume showed that insurgents hit by it suffered larger exit wounds, although information was limited. Its alloy core had haga toxic metals and could be cheaply produced.

The rapid transfer of energy also results in wounding effects beyond the tissue directly crushed and torn by the bullet and fragments.

Getting Your Products Tested Call us toll free haab The Gw Pat 90 round firing a 4.

The leade of the. Army Combat Experimentation Center. In addition to this, tests have shown that 5. It is derived from, but not identical to, the.


These yaw issues were most noticeable at close ranges and were more prevalent with certain calibers and bullet styles—the most susceptible being 5. Originally Posted by Hackroutetracer Everyone is an expert on everything.

The dimensional specifications of 5. Wyman, commander of the U. Archived from the original PDF on December 29, The factors of impact angle and velocity, instability distance, and penetration before yaw reduce the round’s predictable effectiveness considerably in combat lue. If so, read this post. Just as testing was being completed and the first production lots were being prepared inthe rounds were found to fail at high temperatures.

As the Iraq War was happening at the same time, participants decided to use the opportunity to redirect their efforts from just making a “green” training round to creating an entirely new general-purpose rifle round to address complaints ,uke in the field. Military cases are generally made from thicker brass than commercial cases; this reduces the powder capacity an important consideration for handloaders [ 12 ]and the NATO specification allows a higher chamber pressure.

Send a private message to tgoodman Retrieved 14 June Marines adopted the Mk in early due to delays with the MA1. Acta Chir Scand Suppl. But testing showed chamber pressures to be excessively high. The casings and chambers.

×45mm NATO – Wikipedia

It was then known as the. In Julyoperational lume ended with a recommendation for adoption of the M rifle chambered in 5. Production prove-out testing would take time, as over a million rounds had to be test-fired to ensure instances of failure would not occur at the 1 billion rounds per year scale. This lessens kinetic energy transfer to the target and reduces wounding capability.

The makeup and design of the bullet affected accuracy.

Additionally, these heavy-for-caliber loadings sacrifice even more penetrative ability than the M round which has a steel penetrator tip.

Please enter your desired user name, your email address and other required details in the form below. Marine Corps decided not to field weapons chambered in 6.


The United States Marine Corps purchased 1. The front of it is an open tip backed up by a lead core, while the rear half is solid brass.

5.56 x 45 NATO (.223 Remington)

M with standard 62 gr. Previous experience of a change in standard rifle had proved that changing the distance of fire for the training ranges was more expensive than the design of a new ammunition; this prompted the design of a cartridge nominally capable at meters.

The Gw Pat 90 cartridge dimensions are in accordance with the civilian C. During parallel testing of the T44E4 future M14 and the AR inthe T44E4 experienced 16 failures per 1, rounds fired compared to 6.

In recent lab testing of M, it has been shown that the bullets do not fragment reliably or consistently from round-to-round, displaying widely variable performance.

The copper jacket is formed first lume the point, then a steel penetrator is inserted into the jacket and the projectile is crimped shut. The previous standard NATO rifle cartridge was the 7. In order to be able to post messages on the Survivalist Forum forums, you must first register. The first prototypes were delivered to the government in August Conventional, and cheaper, bullets are made with the method of the jacket drawn from the nose to an exposed lead base.

It must not be specialized for any one task to have general-purpose performance, and if improvement in any one area lule that would be considered a secondary benefit.