What is the difference between xm855 and ss109

I looked on this board but didn't find the answer. M is the cartridge. SS is the bullet. Is it the same as M? FN calls Mtype ammo "SS For example, the British purposely underloaded some lots of their ammo in an effort to get their L85A1 SA80 rifles to cycle properly.

The ammo is still loaded with SS bullets and labeled as SS, but it is nowhere near the M velocity specifications. The SS is the name Europe gave the M The M is held to higher tolerances than the SS The US M is usually more accurate because the tolerances are more strict than the SS counter part. Example the steel core being centered better.

ALOT of people loved the ammo, but the sources are I think just about dried up. I don't know of any place that sells it on the web. Hope this helps! Disclaimer I don't know evrything, some of this info can be incorrect. But yes look at the ammo oracle it is very informative. That's it. We even called Federal Premium to confirm this. Federal says that some "M" munitions are placed on the civilian "XM" manufacturing line for insignificant reasons: They produced too much "M" ammo and need to sell through it, the paint on a green-tip is too thick or thin, there is extra sealant around the primer, or some other reason that in no way hurts the performance of the ammo in question.

Whether you buy XM or M, rest assured that your 5. The M usually has an orange or red tip, denoting that it is a tracer round. Tracer rounds burn a chemical compound usually found in fireworks that's glued to the back end of the bullet itself, creating a bright trail in its wake.

Most magazines load a tracer every 3 to 4 rounds. The M dummy round is an insert, used for dry-fire training. Dummy rounds have six indents on the sides of the shell casing to denote that it is a dummy round with no powder inside. The primer is removed so the firing pin can pass through safely with each dry-fire.

The M is a functional shell casing with gunpowder loaded inside. At the business end, the casing is crimped with no bullet in place. The crimping allows appropriate pressure to build in the chamber and barrel in absence of a live round, allowing the rifle or pistol to cycle as if it were firing a live round. Contrary to believe, the M does not have a steel core penetrator like the M The M is merely an extended tracer round with a grain bullet. The M short-range training ammo, or SRTA, allows for live-fire indoors where rifle ammunition would not normally be allowed.

This ammo can be used to train at distances of 25 meters or less. Importantly, many AR owners and military service members zero their rifles for meters, at 25 meters. You should not use SRTA ammo to do this, even though the firing distance is the same. Ballistics for the M round are wildly different compared to M and M, and doing this will result in an inaccurate zero.

Federal 5. S Military. Service-issued ammunition is labeled as "M" steel-core penetrator or "M" conventional ball ammo. The civilian equivalents to these rounds are labeled "XM" and "XM". Federal Premium says the quality and consistency of both labels are the exact same, and both lines of ammo are produced at the same manufacturing facility, using the same methods and processes.

Home 80 Lower Blog The 5. Holographic Optics Explained Muzzle Brakes vs. Flash Hiders vs. Best Sellers. What does it all mean?! By stretching the current AP ban to cover M, which is not an AP round even by their own definition, a precedent would be set. This is patently untrue, and while some choose to claim Clifton simply misspoke out of excitement or nerves, she has had ample opportunity to build her public speaking skills and undoubtedly knew exactly what she was saying.

There are also no records of a single case of M being used against a member of law enforcement. In fact, there are no records of 5. Because your average criminal prefers pistols that can actually be easily concealed, whether in the waistband of their pants or the palm of their hand, and they also prefer truly cheap weapons.

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Disclaimer: The content in this article is the opinion of the writer and does not necessarily reflect the policies or opinions of US Patriot Tactical. Katherine is a military and political journalist with a reputation for hard-hitting, no-holds-barred articles. Her career as a writer has immersed her in the military lifestyle and given her unique insights into the various branches of service.

She is a firearms aficionado and has years of experience as a K9 SAR handler, and has volunteered with multiple support-our-troops charities for more than a decade. Katherine is passionate about military issues and feels supporting service members should be the top priority for all Americans. Her areas of expertise include the military, politics, history, firearms and canine issues.

What is M? Is it an armor-piercing round? What about that steel? Why does it look dirty?