5.56 Ammo - 600 Rounds
(0)
Winchester Lake City M855 Rifle Ammunition 5.56mm 62gr FMJ 1255 fps 600/ct Case of 4-150 Boxes, WM855150C
Brand:
Winchester
Caliber:
5.56×45mm NATO
Rounds:
600
(20)
American Eagle 5.56mm 62gr M855 Ammunition 150rds - XM855BK150
Brand:
Federal
Bullet Type:
Full Metal Jacket
Caliber:
5.56×45mm NATO
Grains:
62 grain
Rounds:
600
Marketplace Insights
★ 4.8/5
based on 20 customer reviews across 2 variants from 9 retailers
Excellent M855 ammo with outstanding value pricing and reliable performance; highly recommended by satisfied bulk buyers.
What customers like
Great pricing/value50%
deal can't be beat especially when the shipping is free!
Reliable/accurate shooting45%
shoots very well in my 1:7 twist barrel and has proven to group very consistently
No jamming/misfires25%
No jams, misfires or duds so it is perfect
PSA customer support15%
love their support of customers and the 2A
Common concerns
Sights won't stay up5%
sights are absolute trash. They will not stay up and will continuously flip down
Frequently Asked Questions
5.56 Ammo - 600 Rounds
How much do 500 rounds of 556 cost?
Five hundred rounds of 5.56 typically cost around $225–$255 based on current pricing, with per-round costs near 45–51 cents. Prices vary by brand, bullet weight, and type—our marketplace listings range from $51 to $3,819. Common options include Winchester, PMC, and Federal for target shooting and plinking.
Can 5.56 reach 600 yards?
Yes. 5.56 can reach 600 yards for target shooting. Heavier bullets like 75–77 grain retain velocity and stability better than 55-grain rounds at distance. A 20-inch barrel helps. Wind drift and bullet drop become significant factors, and shooter skill matters considerably at that range.
What is the highest grain 5.56 bullet?
Commercially available 5.56 ammunition tops out at 77 grains, offered by manufacturers like Black Hills using Sierra MatchKing bullets. This is the heaviest commonly known bullet for 5.56 NATO. These loads typically require a faster twist rate than standard 1:9 barrels provide to stabilize properly.
What 556 ammo do Navy Seals use?
Navy SEALs primarily use Mk262 Mod 1 ammunition, loaded with 77-grain Sierra MatchKing bullets for precision and terminal performance. Some units also use Barnes TSX rounds. These loads offer superior accuracy and effectiveness compared to standard 55-grain FMJ ammunition, particularly from shorter M4 carbines.
Can 5.56 take down a deer?
Yes, 5.56 can take deer. It's considered marginal for the task, so shot placement is critical. Heavier bullets (75–77 grain) outperform 55-grain rounds. Most hunters limit shots to under 200 yards. Several manufacturers offer hunting-specific loads. Some states prohibit it for deer, so check local regulations.
Is 20 year old ammo still good?
Factory ammo stored in cool, dry conditions typically remains reliable for 20+ years. Experts regularly shoot decades-old ammunition without issues. Avoid old reloads, which degrade unpredictably. Inspect rounds for corrosion, discoloration, or damaged primers before use.
Can I buy 556 ammo at Walmart?
Walmart announced in 2019 it would stop selling short-barrel rifle ammunition including 5.56, but 5.56 may still be available through Walmart in some capacity. Check Walmart.com or your local store. Cabela's, Bass Pro Shops, and online suppliers like Brownells also carry 5.56 rounds at varying prices.