Atomic Ammunition Rifle Match — .223 Rem, 77gr HPBT, 50/Box (10-Box Case)
Model: 00427 • UPC: 858767004270 • Caliber: .223 Remington • Bullet: 77-grain Hollow Point Boat Tail (HPBT) • Count: 50 rounds per box (10 boxes per case)
Dial in precision with Atomic Ammunition Rifle Match .223 Rem 77gr HPBT (00427)—premium, match-focused cartridges engineered for consistent accuracy in AR-15s and precision .223 bolt guns. Built around a 77-grain hollow point boat tail projectile, this load emphasizes stable flight, tight groups, and reliable feeding, making it a go-to choice for club matches, PRS-style .223 divisions, law-enforcement training, and serious practice. Each case contains 10 boxes of 50 rounds (total 500 rounds), giving competitors and high-volume shooters the quantity they need without sacrificing quality.
Why Shooters Choose Atomic 77gr HPBT
Match-Grade Projectile: The HPBT profile promotes excellent ballistic efficiency and consistent downrange stability—ideal for accuracy-focused shooting out to extended carbine distances.
Consistency You Can Count On: Carefully assembled components and tight tolerances support repeatable velocities and low shot-to-shot variation, helping you hold smaller groups.
Clean, Reliable Function: Non-corrosive, Boxer-primed ammunition designed for smooth feeding and consistent ejection in AR-platform and bolt-action rifles chambered in .223 Rem.
Training & Match Flexibility: A single, accurate load you can trust for zeroing, positional practice, and match day, reducing the need to re-confirm holds between lots.
50-Round Boxes: Practical range packaging—less time opening cartons, more time shooting; bulk 10-box case for efficient inventory.
Key Features at a Glance
Caliber: .223 Remington (SAAMI spec)
Bullet Weight/Type: 77-grain Hollow Point Boat Tail (HPBT)
Case: Brass (reloadable; Boxer-primed)
Primer: Non-corrosive
Packaging: 50 rounds/box; 10 boxes/case (500 rounds total)
Use Cases: Precision training, club matches, SPR/DMR-style carbines, zero verification, law-enforcement carbine qual practice
Note: Always verify that your rifle’s barrel twist rate (commonly 1:7–1:8) is appropriate for stabilizing 77gr bullets for optimal accuracy.
Performance & Application Notes
Extended-Range Confidence: The 77gr HPBT’s higher sectional density and boat-tail base help maintain energy and minimize wind drift compared to lighter .223 bullets.
Repeatable Dope: Consistent manufacturing supports predictable elevation and wind calls—critical for steel stages and small target zones.
AR & Bolt-Gun Friendly: Optimized for reliable cycling in modern sporting rifles while delivering the precision demanded by bolt-action .223s.
Ideal Use Cases
Competition: Practical carbine/DMR matches, outlaw/club series, and .223 PRS training.
Serious Practice: A match-accurate load for refining fundamentals—prone, barricade, and positional drills.
Zeroing & Verification: Establish your rifle’s true zero and keep it with repeatable factory ammunition.
Technical Specifications
Brand: Atomic Ammunition
Product Name: Rifle Match .223 Rem 77gr HPBT
Model: 00427
UPC: 858767004270
Caliber: .223 Remington
Bullet: 77gr HPBT
Case: Brass, Boxer-primed
Primer: Non-corrosive
Qty: 50 rounds per box / 10 boxes per case
(Actual velocity/trajectory data vary by barrel length, chamber, and environmental conditions. Always confirm performance in your rifle.)
Storage, Safety & Compliance
Store Properly: Keep ammo in a cool, dry location; avoid temperature extremes and moisture.
Safe Handling: Follow all firearm safety rules; wear eye/ear protection; ensure proper chambering (.223 Rem chamber).
Legal Considerations: Ammunition sales and shipping are regulated—check local/state laws for age restrictions, address eligibility, and magazine/feature rules where applicable.
Tips for Best Results
Chronograph Your Lot: Capture velocity for your rifle to refine ballistic tables and confirm SD/ES.
Confirm Twist Rate: Most rifles with 1:7–1:8 twist stabilize 77gr bullets well; slower twists may see reduced accuracy.
Maintain Your Rifle: Clean bore and properly torqued optics contribute significantly to the small groups this ammo can deliver.
What’s in the Case
SEO-Optimized Keywords & Phrases
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Short Meta Description
Atomic Ammunition Rifle Match .223 Rem 77gr HPBT (00427)—match-focused 77-grain HPBT, brass-cased, Boxer-primed ammo. 50/box, 10-box case (500 rounds) for competition and precision training. UPC 858767004270.
Buyer’s Quick Checklist
✅ Need a match-accurate .223 load with 77gr HPBT
✅ Prefer brass-cased, Boxer-primed ammunition
✅ Want 50-round boxes and a 500-round case for efficient training
✅ Have a barrel twist rate suited for 77gr bullets
Level up your accuracy and consistency with Atomic Ammunition Rifle Match .223 Rem 77gr HPBT (00427)—a competition-ready load built for tight groups and reliable function.
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