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74 articles · updated October 2026

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Guide

What Is an Ammo Battle Pack? Packaging & Storage Guide

A battle pack is a sealed bulk ammunition package, not a cartridge specification. Learn how battle packs differ from ammo cans and cases, why round counts vary, and what the packaging can…

October 2, 202613 min read
Guide

Ammo Lot Numbers & Recalls: How to Check a Box

Learn what ammunition lot numbers mean, where manufacturers print them, how they differ from product numbers and headstamps, and how to check official recall notices.

October 2, 202613 min read
Article

Ammo Headstamp Codes: FC, WIN, R-P, S&B, PPU, GFL

Decode common ammunition manufacturer abbreviations including FC, WIN, R-P, S&B, PPU and GFL, and learn why commercial brand codes differ from military arsenal markings.

October 2, 202612 min read
Comparison

Blazer Brass vs Aluminum Ammo: What’s the Difference?

CCI sells both Blazer Brass and aluminum-cased Blazer ammunition. Learn how the case materials differ, how to identify the product, and which details are separate from caliber and bullet…

October 2, 202613 min read
Guide

How to Read an Ammunition Manufacturer Catalog

How to decode an ammunition manufacturer catalog: cartridge names, product families, bullet abbreviations, grain weight, velocity columns, package quantities, SKUs, catalog numbers and…

October 2, 202617 min read
Comparison

SAAMI vs C.I.P.: Ammunition Standards Explained

Learn how SAAMI and C.I.P. differ in standards, proof systems, cartridge naming and pressure measurement, and why their published values should not be mixed casually.

October 2, 202612 min read
Article

What Does Grain Mean in Ammo? Bullet Weight Explained

Grain is a unit of mass used for bullet weight. Learn what “gr” means on an ammo box, how grains convert to grams, and why bullet weight is not the same as powder charge.

October 2, 202613 min read
Article

What Does FMJ Mean in Ammo? FMJ, TMJ, JHP & More

FMJ means full metal jacket. Learn what the abbreviation describes, how FMJ differs from TMJ and JHP, and how to read bullet-type codes on an ammunition box.

October 2, 202612 min read
Comparison

9mm Luger vs 9x19 vs 9mm Parabellum: Same Cartridge?

9mm Luger, 9x19 and 9mm Parabellum are recognized names for the same basic cartridge. Here is why the names differ and which other 9mm cartridges are not interchangeable.

October 2, 202613 min read
Comparison

Boxer vs Berdan Primers: The Difference Explained

Boxer and Berdan primers use different anvil and flash-hole arrangements. Learn the identification clues, what headstamps can tell you, and why primer type is not the same as corrosive…

October 2, 202613 min read
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