Ammo Oracle

The History and Basic Design of .223 and 5.56 Ammunition
Performance of .223 and 5.56 Ammunition
Terminal Performance of .223 and 5.56 Ammunition
.223 and 5.56 Ammunition Testing
Selection of .223 and 5.56 Ammunition
Ammunition recommendations from the authors of the AR15.COM Ammo Oracle
Purchase and Storage of .223 and 5.56 Ammunition
Legal Questions
Miscellaneous .223, 5.56, and other Ammunition Questions
- You people are a bunch of (Fackler worshippers/idiots/jello fans/armchair theorists/mindless fools). How in the world can you expect me to believe (insert Ammo Oracle answer here)? You have all lost touch with the working man shooter with your lofty theories and ivory tower "science." I know for a fact that my super special homemade round will tear up badguys because it tears up potroast like there is no tomorrow. Why should I believe anything on here?
- None of this answers my question. Now what?

I have my rifle zeroed with M855 ammo. Will any 62gr ammo shoot the same?

Introduction

No.

While M855 uses a 62gr bullet, it is a longer bullet due to the steel penetrator in the front of the bullet core. Steel is less dense than lead, so more volume of steel is needed to end up with the same weight (mass). There is also a small air cavity in front of the penetrator, unlike a bullet with a solid lead core. Any non-M855/SS-109 62 grain ammo (such as Wolf and Federal's American Eagle 62gr FMJ offerings) will have a solid lead core, and the resulting bullet will be significantly shorter than an SS-109 bullet. That means you can expect trajectory and penetration performance to differ as well.

Warning

Confirm Action

Ammo Oracle

I have my rifle zeroed with M855 ammo. Will any 62gr ammo shoot the same?

Introduction

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