Would you like to try a different 5.56×45 round in your AR-15? Look at Winchester’s M855 ammunition; it is essentially the same as what our forces would use to engage light targets and vehicles, and it also works excellent for recreational target shooting.
The 62 grain FMJ bullet of this cartridge is encased in a pure gilding metal jacket. Its core is composed of a steel front and a lead rear. The bullet has the ability to pierce sheet metal and other barriers because to its steel tip. When the M855 bullet penetrates soft tissue, its two core parts may also separate, creating two independent wound paths as opposed to just fragmentation.
When fired from a 1:7″ barrel, a 62 grain bullet will work just fine, but for the optimum long-distance accuracy, you require a 1:9″ or 1:8″ barrel. More crucially, the penetrator cores in this ammunition will draw a magnet!
It is not military surplus; instead, this non-corrosive, Boxer-primed ammunition was created for the industrial market. The new cases, however, are military-grade, which implies that after their strengthening heat treatment, they were not polished.