When it comes to zeroing your AR-15, there’s often a lot of debate about the best range at which to set your sights. While some shooters go with the traditional 25 or 50 yards, others recommend 100 or 200 yards. But there’s an approach that you might not have heard of: Maximum Point Blank Range (MPBR).
MPBR is a concept that can dramatically simplify how you approach shooting and zeroing. It’s particularly useful for rifles like the AR-15 that are commonly used for both close-range engagements and intermediate distances, making it ideal for hunters, recreational shooters, or even defensive purposes.
What is Maximum Point Blank Range?
Maximum Point Blank Range refers to the distance at which your rifle’s trajectory remains within a certain “vital zone” without needing to adjust the sights or holdover. This zone is typically considered to be 6 inches in diameter—roughly the size of an average chest cavity of a deer, for example.
By setting your zero at the MPBR, your bullet trajectory will intersect the line of sight twice: once at the shorter distance (near zero) and once at a longer distance (far zero). Between these two points, the bullet will stay within the 6-inch vital radius.
This technique eliminates the need for constant adjustments or holdovers for shooting at varying distances within the MPBR range. It allows you to aim center mass at any point within the vital zone, whether you’re at 10 yards or 350 yards away.
Why Choose 36 Yards as Your Zero for MPBR?
For many AR-15 shooters, 36 yards is the sweet spot for setting your zero to achieve MPBR. With a 36-yard zero, your bullet’s trajectory will intersect with the line of sight at both 36 yards and at a longer range of approximately 350 yards. The entire area between these distances will stay within the 6-inch vital zone.
Here’s why it works:
Initial Trajectory: When you zero your rifle at 36 yards, the bullet starts out relatively flat but begins to rise.
Midway Through the Path: The bullet continues upward toward the apex of its trajectory, which happens around 100-150 yards, still staying within that 6-inch vital zone.
Far Zero: Eventually, as gravity pulls it back down, the bullet will cross the line of sight again at around 350 yards.
For a typical AR-15 with a standard 55-grain FMJ bullet, a 36-yard zero is an excellent balance between accuracy and simplicity.

Key Benefits of Using MPBR for Your AR-15:
- Versatility: MPBR works well across multiple distances, making it a great option for shooters who want to be effective at both close-range and mid-range shooting without needing to adjust their sights or compensate for elevation.
- Simplicity: With a properly zeroed rifle using MPBR, you don’t have to remember different holds or worry about elevation changes for a range of common distances. Simply aim center mass, and the bullet will do the rest within that vital zone.
- Faster Target Engagement: You won’t waste time adjusting your scope or hunting for the perfect hold. The time saved can be critical in self-defense or competitive shooting scenarios.
- The Graphic: Visualizing MPBR
- To help illustrate this concept, here’s a graphic showing the typical bullet trajectory with a 36-yard zero. It shows how the bullet rises to its highest point (around 100-150 yards) and then falls back within the 6-inch vital zone until it crosses the line of sight again at around 350 yards.

Conclusion
By setting your AR-15’s zero at 36 yards, you can effectively maximize your rifle’s potential across a range of distances without the need for complex adjustments. This makes MPBR a perfect choice for those looking for simplicity and reliability in their shooting setup. Whether you’re hunting, competing, or training for home defense, using MPBR can help you make the most of your rifle’s capabilities.
If you’re looking for a more adaptable and efficient approach to zeroing your AR-15, consider experimenting with the MPBR concept. It’s an easy, effective way to get the best performance out of your rifle in real-world shooting scenarios.


2 responses to “Selecting a Zero Range for Your AR-15 Using Maximum Point Blank Range”
Will this work on any other caliber of rifle (such as a .308 win.)m
Ron, Absolutely. This process will work for any caliber, firearm or Bullet/cartridge selection. The key is you need to know or measure the bullet’s BC, average speed, sight distance above the barrel and zero distance. I recommend using the AE Ballistic App because it has the MPBR feature built into it and you select your vital zone radius and it will then recommend a zero distance. Once all the data is in the ballistic app, you can play with zero distance and see how it affects your vital zone. Thank you for the question. Gus