The modern carbine cartridge—the .223 Rem.—has been with us since the early 1960s. Since then, we’ve seen its case altered to make other cartridges, and we’ve also seen new carbine-compatible introductions based on other cartridge cases.
For those that carry revolvers, the .38 Special is the most popular defensive round - but what ammunition is best? Ammo editor Richard Mann gives some guidance on great choices.