Broadhead Effectiveness

Choosing a broadhead is a very personal thing. People often ask me which are best, and my answer is always the same: “What do you like best; blondes, brunettes, or redheads?” The answer, of course, is “Yes!” If you keep in mind that a broadhead has one function, and one function only — to cut a hole through hair, hide, muscle and internal organs — and that to do so it must have blades sharp as a scalpel, be strong enough to withstand some serious abuse and be designed so precisely that it can be made to fly like a laser beam, you can now eliminate the cheap stuff and choose from one of dozens of broadheads on today’s markets with confidence that fits both your equipment and your personality.

A Brief History

A great combination for black bear hunting — a small-diameter Victory Archery VAP arrow shaft and replaceable-blade Thunderhead 125 broadhead.

Early man used nothing more than a sharpened stick, but soon learned that adding a sharp piece of flint to the end of his arrow made it more deadly. When the Europeans arrived in the New World they brought with them cheap metal “trade points,” two-bladed broadheads that could be re-sharpened. When modern bowhunting was in its infancy, archers added a barbed end to their two-blade heads, believing that if the broadhead stayed in the animal more damage would be done — just the opposite is true.

In the early 1900’s, metal two-bladed broadheads began incorporating a tubed ferrule that slipped over the end of wooden arrow shafts. Many of these were made by melting the lead core of a .35-caliber bullet, cutting a slot in the tip and dip-soldering the blade in place. Soon additional blades were added to create a four-blade design. As arrow speed increased, vents were cut through the blades themselves to help thwart wind planing. Soon a three-blade design came about which addressed wind planing while helping create wider wound channels.

In 1956, Fred Bear perfected the replaceable bleeder blade in his Bear Razorhead broadhead, which made adding fresh, razor-sharp blades in tandem with the fixed main blade that had to be hand sharpened quick and easy. Other creative bowhunters soon recognized the advantages of sharp replaceable blades and began experimenting with ways to make it happen. Jim Dougherty began gluing razor blades to the ferrules of his broadheads in the late 1960’s, but it was Richard Maleski with his 1972 Wasp broadhead that brought mass production to the replaceable-blade design.

The 100-grain Rage Trypan features a super-strong titanium ferrule and 2-inch cutting diameter with blades that are .039-inch thick. In Robb’s experience, they fly extremely well and terminal performance is devastating.

Archers had also been experimenting with expandable broadhead designs for decades, including the 1956 Mohawk, 1959 Geronimo, 1972 Pioneer Game Tamer and 1983 Viper, but it was Greg Johnson and his Rocket Aerohead in the late 1980’s that was the first successful commercial design. Along the way innovative archers tried lots of things from building broadheads out of synthetic materials to metal injection molding (still used on some broadheads like the G5 Montec), fiddling with broadhead size to create lighter and smaller-diameter broadheads that help increase speed, as well as those with oversized cutting diameters.

Today, the modern mechanical broadhead — which experienced performance problems early on — is the best-selling design type in North America, though not by much, as replaceable- and fixed-blade broadheads still have a large following. The question is, which is best for you?

Fact vs. Fiction

It is hard to quantify broadhead performance en masse simply because it is difficult to collect data in sufficient quantity to make a judgment. However, a study presented at the Southeast Deer Study Group in 2014 by Andy Pedersen, a retired senior engineer at Naval Support Facility Indian Head, a military installation on the Potomac River in Maryland just south of Washington, D.C., tells us a lot.

The base is involved in explosives manufacturing and research, among other things, so the public is not allowed on site. Prior to 1989, sharpshooters were used to control the overpopulation of whitetail deer. In 1989, the base’s Natural Resources Office established a formal bowhunting program open to military and civilian employees to help maintain the deer population within the carrying capacity of the habitat. Pedersen helped get that program running.

Hybrid broadheads like the Bloodsport’s Grave Digger have a fixed cutting tip followed by mechanical blades that open on contact. They can be extremely deadly.

Pedersen is a numbers guy, so he lobbied for data-collection requirements. Hunters are required to file reports on whether they shot at, hit, or recovered a deer (defined as found within 24 hours.) The base’s Natural Resources Office collects biological data such as live and dressed weights and jawbone age from every deer killed.

The base is not large or heavily hunted. Two areas totaling 3,000 acres are open to hunting; on one of the areas, there is an earn-a-buck requirement (meaning a doe must be harvested before the hunter can take a buck), and bucks must net 130 inches Pope & Young. On the other area, there’s no earn-a-buck requirement, and bucks must have at least three points on one side. A total of 209 bowhunters pursued deer on the base during the 24 seasons in this study.

The Data Says …

A total of 135 of the 209 bowhunters recovered at least one deer, dragging out a total of 1,083 deer after putting in 35,011 hours of time on stand. That’s one deer for every 32.5 hours in the field, and an average of about eight deer per successful bowhunter. To get 1,083 deer, hunters reported hitting 1,296 deer from 1989 through 2012 for a recovery rate of 83.6 percent. Separated by bow type, crossbow hunters had an 89 percent recovery rate compared to 83 percent for compound bows.

Broadheads like NAP’s 100-grain, 2-blade mechanical Killzone are the biggest seller in today’s North American market. That’s because they are easy to tune, fly extremely well and cut huge holes.

When it comes to broadhead type (for both compound and crossbow users), hunters using fixed- or replaceable-blade broadheads recovered 82 percent of their deer (874 recovered out of 1,066 hit). Hunters using mechanical broadheads recovered 91 percent of their deer (209 out of 230 hit). The total number of deer is lower for mechanicals because they have only been approved for use on the base since 2007, although the majority of deer shot since then were shot with mechanicals.

Compound bow shooters using mechanicals recovered 143 of 161 deer for an 89 percent recovery rate; those using fixed blades recovered 821 out of 1,001 deer for an 82 percent recovery rate. Crossbow hunters using mechanical broadheads recovered 66 out of 69 deer for a 96 percent recovery rate; those using fixed blades recovered 53 out of 65 deer for an 82 percent recovery rate.

Pedersen went so far as to separate fixed-blade recovery rates into pre- and post-mechanical eras. There was no statistically significant difference. Recovery rates with fixed-blade broadheads shot from compound bows were 82.2 percent from 1989 to 2006 and 81.0 percent from 2007 to 2012. For crossbows: 81.7 percent in the early years, 80.0 percent more recently.

When traveling abroad, be sure to check regulations regarding what broadheads are legal. This kudu bull fell to a fixed-blade Muzzy Phantom.

How about accuracy? Crossbow shooters hit their target 94.5 percent of the time, while compound shooters hit theirs 89.9 percent of the time. The comparison was almost exactly the same for broadhead type. Mechanical users were slightly higher, hitting the deer 94.3 percent of the time compared to 89.4 percent for fixed-blade.

And The Winner Is …

What the data in this study tells us is simple — assuming that the shooter is a competent shot with the bow type chosen, on deer-sized game the differences in performance between bow types and broadhead types are small. Another factor here was that the average shot was less than 20 yards, which lends itself to precise arrow placement. Given that, both mechanical and replaceable-blade heads will get the job done in most situations.

In terms of penetration on the world’s largest game, there’s no question that the old-school two-blade design out-penetrates all others, all other things like arrow weight and shot placement being equal. After decades of using nothing but the replaceable-blade three-blade design on everything from ground hogs to grizzly bears, I was personally brought kicking and screaming into the mechanical broadhead camp for most of my bowhunting after experiencing tremendous terminal performance on tough critters like nilgai, elk and black bears, and seeing how accurately they fly at distance. The key is to remember that broadheads are designed to slice through tissue, muscle and organs; they are not designed to smash through bones. Thus, above all else a broadhead must fly accurately with your bow-and-arrow set-up.

Turkey hunters are best served with mechanical broadheads with a wide cutting diameter that helps ensure that a gobbler’s tiny vital area is hit.

The broadhead is the ultimate connection between the bowhunter and his prey. We all understand how difficult it is to get a controlled, close-range bow shot at an animal. When we do, the success or failure of the day is totally dependent on whether or not the broadhead does its job. If it does, we whoop and holler and give thanks to the stars above for our good fortune. If it fails, at best we eat tag soup; at worst, we wound a magnificent game animal and return to camp in shame. Fortunately, today’s broadheads, regardless of design, are truly effective tools of predation.–Bob Robb

3 thoughts on “Broadhead Effectiveness”

  1. Since publishing “A Comparative Study…”, we have continued to gather deer-recovery data for bowhunters who used either fixed or mechanical broadheads on the Indian Head Navy Base. We now have the recovery disposition of over 1500 archery-hit deer. The additional 5 years of data have further strengthened the original finding (correlation) that bowhunters who use mechanical broadheads have a statistically significant higher deer recovery rate than bowhunters who use fixed blade broadheads.

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