Winchester 5.56 55gr FMJ Ammo
(0)
Winchester USA WHITE BOX 5.56mm 55 Grain Full Metal Jacket Brass Rifle Ammo, 500 Rounds, WM193500
Brand:
Winchester
Bullet Type:
FMJ
Caliber:
.224 VAL
Capacity:
500
Finish Per Color:
Brass
Grains:
55 grain
(0)
Winchester SGM193500 5.56x45mm NATO M193 Ammo 55 Grain FMJ 500 Rounds
Brand:
Winchester
Bullet Type:
FMJ
Grains:
55 grain
Rounds:
500
Frequently Asked Questions
Winchester 5.56 55gr FMJ Ammo
Is the Winchester 5.56 55gr any good?
Winchester USA 5.56 55-grain FMJ is a solid choice for range use and training. It feeds reliably in most AR-platform rifles and offers decent accuracy. Pricing typically runs $220–$500 depending on quantity and retailer. A dependable budget option, though not intended for hunting or defensive use.
What's better, 55gr or 62gr?
Choice depends on your use case. 55-grain rounds travel faster with flatter trajectories, making them suitable for target shooting at shorter ranges. 62-grain ammo offers better penetration and stability at longer ranges. Match your choice to your intended purpose and verify compatibility with your specific barrel for best accuracy.
How much do 500 rounds of 556 cost?
Five hundred rounds of 5.56 typically cost between $220 and $500, with an average around $300. Price varies by brand, grain weight, and retailer. Budget options like Winchester USA 55-grain FMJ run closer to the lower end, while premium or specialty loads cost more.
Is 55gr 556 good for self-defense?
55-grain FMJ is quite effective for self-defense. Federal M193 55gr 5.56 is a strong choice. Purpose-built loads with bonded or hollow-point bullets can offer additional terminal performance benefits. Heavier options like 62gr or 77gr provide improved penetration. Choose quality ammunition, but don't dismiss 55gr FMJ as inadequate.
What is the shelf life of 5.56 ammo?
Properly stored 5.56 ammo remains functional for decades. Manufacturers conservatively recommend use within ten years, but longevity depends on storage conditions. Keep rounds cool, dry, and away from moisture and temperature swings. Poor storage can degrade ammo within a few years. Full metal jacket rounds generally resist deterioration better than hollow points.
What does M193 mean on 5.56 ammo?
M193 is the U.S. military designation for standard 55-grain full metal jacket 5.56x45mm ammunition. It was the original military load developed for the M16A1 rifle. M193 runs at higher velocity than heavier loads like M855, but lacks M855's steel penetrator tip.
Can you shoot 55gr in 1/7 twist?
Yes, 1/7 twist barrels handle 55-grain bullets fine. Fast twist rates do not over-stabilize bullets, and 55gr FMJs perform just as well in 1/7 as in 1/9 twist barrels. Most shooters see accurate, reliable results for training and general use with 55gr projectiles in 1/7 twist.