(Continued from Part 1. This concludes the article.)
The topics that I’ll deal with in Part 2 include:
• The size, shape, location, and contents of a deer’s vital zone,
• Legal, ethical, and practical considerations using your defense rifle for hunting,
• Other caliber options available for your AR-15 platform including .300 Blackout, 6.5 Grendel, 6.8 SPC, .224 Valkyrie, .22 Nosler, .350 Legend, and the new kid on the block 6mm ARC.
Let’s begin by understanding where to aim.
HOW BIG IS A DEER’S VITAL ZONE?
Well, it depends. A deer’s vital zone area is easy to visualize. Draw a horizontal line splitting the deer’s body. Draw a vertical line straight up the back of a deer’s front leg. The intersection is the center of the vital zone. This is where the lungs and all the major arteries and veins come together with the heart in the lower portion. For a small doe, the vital area is a circle 5” to 8” in diameter, and on a large buck, the circle might be as large as 10” to 11”. If you aim at the center of that circle, your shot should still be fatal 4” high or low on a small doe and 5” high or low on a big buck.
Berger Bullets, a premium bullet manufacturer offers free downloadable vital zone targets. Designed to print on standard size paper, these targets are a great way to lock in the visual image of your target as you practice. Using one of the images on the Berger target, I super-imposed the dotted red lines below – splitting the body in the middle and coming straight up the back of the front legs. The three irregular shapes on the target show the location of the vital zone. Where the two red lines cross is your aiming point. The Berger target will aid in visualization, but aiming at the unmarked center of a paper plate also works well. My personal preferences are an 8” round steel gong made from 3/8” thick AR500 steel and a similar 4” gong hanging from the same cross bar. Start at 100 yards on the 8” target. (The image is from atlastargetworks.com. After warming up and getting relaxed, put all your attention on the 4” steel target. Then, move the target set further away and continue to practice. Aim small.
A successful shot may not drop your quarry in its tracks. In fact, expect that it may take 10 seconds for death to occur, and a leaping deer will travel a fair distance in that short time. Depending on the actual shot placement, it may take a minute or more for the deer to bleed out. Sometimes, you do everything according to the book, but at the last second, the deer looks up or smells your scent or hears a twig snap or sees the white flag from another deer. A single step in that fraction of a second could cause your shot to be several inches off dead center. Maybe you got “buck fever” and jerked the shot a little. Perhaps at the very last fraction of a second, you flinched. If you have consistently practiced to hit the center of the vital zone, these last minute “gotchas” will probably not cause a complete miss. It just means more work to track the wounded deer.
MPBR also works for wind conditions up to 10 to 15 mph even at 90 degrees to your point of aim at ranges below 200 yards. Like bullet drop, the effect of wind drift increases dramatically with distance. It is also important to look for natural indications of wind speed and direction such as trees or grass near your target. The wind pattern might be quite different from where you are located. Depending on field conditions, you may need to adjust as much as the full size of the vital zone to compensate for the wind. Remember that your reference point is always the center of the vital zone. Once you have done all the basic work sighting in your rifle, practice some in windy conditions. That could be the real world on your hunt.
PERSONAL DEFENSE RIFLE AS A VIABLE CHOICE
Assuming a 22-caliber centerfire cartridge is legal in your state, your personal defense weapon may be an excellent choice as your deer hunting rifle. Some states like Wyoming also specify an expanding bullet design and/or a 60 gr minimum weight. Two of the three gun stores closest to my shop had multiple choices for hunting loads in .223 Rem on the shelf. The third had only a few boxes of 55 gr FMJ rounds in 5.56. Your local conditions may leave no choice but the internet.
More to the point, is .223 / 5.56 an ethical choice? That depends on two key factors. Are you capable of consistently hitting a 4” steel gong at 100 yards from a variety of field positions? Yes, and we move to the next question. Whether your AR-15 is chambered for 5.56 or has a .223 Rem chamber, can your rifle and you put a 3-shot group on target with a maximum spread of 4” at 100 yards using factory .223 ammo? Yes? Keep practicing and enjoy your hunt!
If the answer is a qualified “Maybe…” or just plain “No.”, it may be time to do some detective work. Diagnosing the problem is something we have done for a number of customers. Sometimes the rifle needs a little help, for example a smoother and lighter trigger or clearer optics or just a more rigid scope mount. Sometimes the shooter needs to have someone coach with breathing, trigger squeeze, a more natural rifle fit, or better eye relief for the scope. Over the years, we have developed a routine process that works most of the time to get much tighter groups. That could be a topic for another article.Continue reading“Flatten The Curve for Hunting Deer – Part 2, by Behind The Counter”
