Some readers are using a BUIS as the primary sighting system for their rifle. Be it cost or just saving up for a quality optic… or they may like the KISS principle.
This post I hope will provide some insight as to the capabilities of a 50 yard zero in conjunction with a non adjustable BUIS.
When I got started with my goal to shoot longer distances accurately and repeatably but I would get really hung up on the projectile weight in relation to my adjustable carry handle. Only when I finally put the bullet drop to paper did it make me realize how much I fretted over nothing. I hope you forgive the uglyness of the picture I am about to post but I post it for good reason:
As you can see with a simple 50 yard zero your rifle can still get hits on targets out to 350 yards with either loading. The red dot would be the aiming point from 0-350 yards. At 400 yards the drop gets iffy so consider the holdover needed to reliably put rounds on a target at that distance would require one to obscure the target with the front sight post. Past 350 a single non-adjustable BUIS would be out of its league.
Don’t hesitate to visit a carbine competition with only basic equipment. The chances of having to shoot past 300 might be fairly low or only a stage or so. In the meanwhile you will learn much while you save up for that ACOG.
If you want to examine statistically significant data on building the Best AR15 with data driven components, visit the Data Driven AR15 Project. Work MFing cited too.
Want to take your iron sight shooting to the next level? Visit The Ultimate Guide to Iron Sights Ver. 1.1!