Best Ammo for the AR-15: Range, Defense, and Hunting
January 18, 2026 · AmmoBin.com
The AR-15 runs well on a wide range of ammo. The trick is matching the load to the job — cheap FMJ for practice, controlled-expansion bullets for defense or hunting. Here is the rundown.
Range / practice
55gr or 62gr FMJ in 5.56 or .223 is the cheapest, most available choice for high-volume training. Buy it by the case to lower cost per round.
Home defense
Many choose quality 55–77gr soft points or controlled-expansion loads designed to limit over-penetration while remaining effective. Reliability in your rifle is non-negotiable.
Hunting
For varmints and predators, lighter rapid-expanding bullets work well; for larger game where legal, heavier bonded soft points are the choice. Always check your state's caliber regulations.
Before buying, confirm whether your rifle is 5.56, .223, or .223 Wylde — see our 5.56 vs .223 guide — then compare live prices for 5.56 NATO and .223 Remington.
Frequently asked questions
What is the cheapest ammo for an AR-15?
Bulk 55gr 5.56 or .223 FMJ bought by the case is the cheapest way to feed an AR-15 for practice.
What ammo is best for AR-15 home defense?
Quality soft points or controlled-expansion loads that are 100% reliable in your rifle and balance effectiveness with reduced over-penetration.
Compare live prices
