There's a lot of engineering voodoo that goes into making a rifle work well and fire accurately. The length of a rifle's barrel and how it affects the velocity of the bullet is one of those major factors. In this post, I explain a bit of the physics involved here. But the real meat of the post is comparing three different barrel lengths, their ballistic trajectories, and how it might affect what zero you choose.
2019-12-01 Gun Digest, PDF, Military Technology
Effective Range of an AR-15: How far can it shoot? - 80 Percent Arms
The Mountain State Sportsmen's Association – Technical Tips
Make faster Hits and Improve Marksmanship with Your Point Blank Zero
Does adding a camouflage spray to a free-floating precision rifle barrel disturb its natural harmonics and impede its accuracy? - Quora
Preliminary Marksmanship Instruction
Barrel Length, Trajectory, and Learning Your Zero - Everyday Marksman
Handgun Mechanics – Weapon Snatcher
Preliminary Marksmanship Instruction
Barrel Length, Trajectory, and Learning Your Zero - Everyday Marksman
Does a rifle bullet rise when shot? - Quora
