 “Among the loads was a 70-grain
ASYM load that uses Lake City brass and replicates the brown-tip ammunition
currently used by U.S. Special Operations units. ASYM calls it a barrier load,
so I shot it through every hard target I could find including steel, wood and
concrete blocks – with outstanding results.”
-- Keith Wood, Shooting Illustrated, April 2011
 SUPERIOR BARRIER PENETRATION AND EXPANSION. OPTIMIZED PERFORMANCE FOR SHORTER BARRELED CARBINES.
"Barrier Blind" PerformanceThis load features the solid copper 70 gr. Barnes TSX bullet. This bullet offers tremendous performance against barriers such as auto glass and sheet metal. As it is solid in construction, there is no jacket to separate from its core, as with traditional bullets. The bullet stays intact after passing through intermediate barriers.
SBR Performance
This load performs particularly well in shorter barreled carbines, because it is designed to expand, not fragment. The expansion threshold for this bullet is approximately 1800 fps. Even fired from very short 10.5" barreled carbines, this expansion velocity threshold is maintained out past 200 yds.
Hunting Applications
Additionally, this load performs very well as a hunting round, on medium sized game such as deer and antelope.
1 in 8" twist or faster barrels are required to stabilize this bullet.
Velocity: 2800 fps - 20" Colt 5.56 NATO 1 in 7" chrome lined
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