⚠ MAX LOAD — Verify before loading
5.56 mm Nato — 77.00gr Sierra Reloading Data
Posted by
imported_data
on Aug. 12, 2026
77.00gr
Bullet Weight
Sierra
Bullet Brand
Match
Bullet Type
26.60gr
Powder Charge
Powder
Powder Brand
2883 fps
Muzzle Velocity
2.2550"
OAL
N/A
Case
57293 PSI
Pressure
Shooter Notes
Reference data — imported 2026-08-12.
Projectile: 77 gr Sierra MK. Case: N/A.
Starting load: 24.0gr @ 2,608fps | Max load: 26.6gr @ 2883fps / 57,293 PSI.
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