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Accuracy and Precision- The ego chase.

Despite this being a small group, the shooter error is very visible.


 Many years ago, I watched as the internet simultaneously applauded a company for offering a 1 MOA guarantee while saying that Defoor’s 4 MOA shooting standard was too tough. A great shooter can do great things with a bad rifle, but you can only get so far. Along with that, a bad shooter with a great rifle will do terrible things with that rifle. By collecting data, it becomes clear very quickly where the problem lies.

I have enough data collected to call myself a solid 1.2 MOA shooter. I have collected on several weapon types and tens of thousands of rounds. Could I be better, sure? Of course. That isn’t the important part. What is important is that I can use that as a baseline for more data collection.
If I am truly hunting accuracy, I must remove myself from the equation. I need to fully bench the rifle and take my skill out of the mix. This will give me the inherent accuracy of the rifle and ammunition combination. If I don’t, I probably won’t see anything solid below 1.2 MOA.

Two more groups with obvious shooter error.

For this, I would be collecting a few data points. Group size is one data point. For this I can use apps such as Ballistic-X and standard targets for all the testing. You can go as deep as you like with this and use calipers and other tools. Something that most don’t think about when working groups is the velocity of the bullet. High Standard Deviation can cause group size to expand do to the faster and slower bullets at range.

This group represents the possible(unconfirmed) inherent accuracy potential of this combination.

Getting that data requires some sort of chronograph to give you muzzle velocity and SD of your chosen ammunition. Ammunition is one of the greatest factors in accuracy. You need to test with several brands and types and collect the data.  Another tool that can be of great use during this is the Mantis X. Being able to show the movement of the firearm during that testing makes perfect sense.

Be on the look out for the next post talking through the process.

Ash Hess
A competitive shooter and Gov Sales Specialist at Knight's Armament Company.

Co-Founder of Quantified Performance, LLC.

I am also a Retired US Army Senior NCO. My last assignments included serving as the Senior Writer for Small Arms in the Weapons and Gunnery Branch and the US Army Infantry School Marksmanship Program developer at the Maneuver Center of Excellence Fort Benning, Georgia.

Army Schools include US Army Master Marksmanship Trainer Course, Rifle Marksmanship Instructor Course, Urban Combat Leaders Course, Air Assault, Rappelmaster, Senior Leaders Course, Army Basic Instructor course, High Angle Marksmanship Course, and Unit Armorer course.

I also attended the TigerSwan Basic Carbine course, Defoor Proformance One day Carbine Refresher, Advanced Carbine and Scoped Rifle courses, Sionics Weapon Systems M4 Armorer course, Modern Samurai Red Dot Pistol, and the MDTS Practical Small Knife 1course.

Four combat tours totaling fifty-two months overseas.
Ash Hess on Facebook

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