Videos tagged with Sierra Match King 69 Grain

This video explores the pros and cons of 20-inch barrels on 5.56 gas guns, primarily for competition. The instructor emphasizes that barrel length primarily affects velocity and maneuverability. While 18-inch barrels offer better maneuverability in tight spaces, 20-inch barrels provide increased velocity, leading to flatter trajectories and retained energy at longer distances, which is beneficial for competition.

This video details an accuracy test of the Primary Weapon Systems MK 111 PRO piston AR pistol at 100 yards. The test involved shooting five different ammunition loads, ranging from 35 to 77 grains, to assess the pistol's ability to stabilize various bullet weights and the impact of ammunition quality on accuracy. The results indicate the 11-inch barrel can achieve useful accuracy, with heavier, match-grade ammunition performing significantly better.