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Chris Parrino with a Pronghorns taken with a GrizzlyStik arrow and broadhead system.

Chris Parrino with a Pronghorn

For all bowhunters - an arrow and broadhead set up that can give them reliable lethal penetration, even when bone is encountered, is the most important element of their bowhunting gear - period.

Once bowhunters actually try heavier arrows with the right kinds of broadheads they never go back. When starting out, most bowhunters are advised to shoot light arrows with light broadheads so they get faster arrow speeds, higher kinetic energy numbers, and flatter trajectories. The problem is that they often also get poor penetration and start losing animals. The worst case scenario is when they get lucky for a while and harvest a few animals - even though getting poor penetration. Sometimes their luck holds our for quite a while. When that happens, they start to believe that light and fast is the way to go. Eventually though, things go wrong. Shoulder blades are hit, a leg bone, or they fail to penetrate well enough for a clean kill - even on a broadside shot. 

Eventually they start to question. What's wrong? This is crazy - why aren't my arrows able to give me clean kills? Normally, there is a final - "That's it! That's the last animal I am willing to lose to an inferior arrow and broadhead set up." The lucky ones start researching for a better arrow and broadhead combination before they lose too many animals. 

Every ethical bowhunter that releases an arrow at a live animal, whether a turkey, whitetail deer, elk or moose, must do everything possible to ensure that arrow is lethal. Based on decades of research, an arrow/broadhead combination that weighs at least 650 grains and has Forward of Center (FOC) advantage, with great shot placement, will be lethal. Let’s begin with the arrow penetration factors developed by Dr. Ed Ashby.

UNDERSTANDING ARROW PENETRATION

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Many factors contribute to arrow performance. When it comes to arrows and broadheads - choose wisely or you may have to watch your whitetail deer, or some other animal, run off with your arrow because your setup didn't have what it takes to get good penetration. As bowhunters we work hard for every animal. No one wants to lose even one because of bad arrow/broadhead choices. 

You're about to learn the truth about arrow performance and arrow lethality. This truth we're talking about is backed by science, physics, and actual shots on big game. You may find it hard to believe, but how can you argue with facts? Our reports are easy to read and understand. Most bowhunters don't care about the actual math and science behind research, we just want to know what works and what doesn't. We want to know that when we release an arrow, no matter what happens, we've selected gear with the highest likelihood of producing quick, clean kills. We encourage you to read these reports in this order.


MATCHING ARROW WEIGHT TO GAME ANIMAL

The chart below shows the recommended total arrow and broadhead weights for reliable lethality on specific categories of game animals. Please note that arrow weights below 650 grains will not give reliable penetration when heavy bone is encountered. When arrows + broadheads are 650 grains and up, and follow the 12 penetration enhancing factors, they can be counted on to breach heavy bone.

HEAVY BONE DEFINITION

ABF is often asked what we mean by “heavy bone”. Our basic heavy bone for testing is the in situ ribs of freshly taken (shots taken within 30 minutes of expiration) Cape and Asiatic buffaloes. These buffalo are utilized because of the overlapping nature of their ribs. Assuring a rib hit on virtually every test shot taken. The thickness of these ribs ranges from 0.67 inch to a full inch, depending on species, sex, age and size of the individual buffalo. Ribs of these true buffalo have a near nonexistent bone marrow cavity and effectively represent near solid cortical bone. Among smaller game animals, based on ABF testing, this bone equates well with their heavier shoulder and hip bones, such as scapular ridge, heads of the scapula, humerus, femur and the bones of the pelvic girdle, as well as bones of the skull.

Rob Neilson with Cape Buffalo in Zambia, Plan B Arrow.

It’s only a Plan B if there was a Plan A

The Plan A Arrow

ABF volunteers hunt with highly efficient arrow systems we sometimes refer to as “Plan B”. This refers to arrows that will work for most what-if scenarios when things don’t go according to Plan A, such as an unexpected animal reaction to the sound of the bow loosing an arrow; turning what could have been perfect shot placement prior to that movement into a marginal hit, i.e., heavy shoulder bone, too far back, etc. Those scenarios require an arrow to overcome additional resistance to penetrate and still reach the vitals for a clean kill. Unfortunately, ABF has seen people going to the field without Plan A. There cannot be a Plan B without Plan A. It is not acceptable to approach a hunt with the mentality that a Plan B arrow will work regardless of accuracy, familiarity with the equipment, and familiarity with the anatomy of the target animal. Ignoring any aspects that go into Plan A falls into the unethical category, plain and simple. If anyone is going to the field with that mentality, we hope this can serve as a reminder that the animals we pursue deserve better.

 

Recommended Books

Jim Aken: It’s All About the Arrows! Engineering Arrows for Enhanced Hunting Performance

You can get your book directly from Jim by emailing him at jim_aken@hotmail.com. Autographed copies are available.

We don't think you will find better information about how arrows work than this practical book that is built on direct experience. 'It's All About The Arrows!' - Engineering Arrows for Enhanced Hunting Performance is a terrific book that describes how one man prepared his equipment for the hunt and the final results over numerous hunts. Jim takes you to Africa in the 135 pages and relates how different arrows performed on everything from deer sized game to Cape Buffalo and Hippo.If you are technically oriented, you will appreciate the exhaustive work that Jim did to improve his chances of success in the field including the physics of arrow performance .... but we will say the highlight of the book are the 8 chapters that cover different hunts in great detail. Things go wrong and events go right but this is as close as you will get to Africa without making the trip.....and who the heck shoots an arrow completely through a Hippo and Cape Buffalo. Jim does! One advantage of the crossbow was the elimination of some variables versus other bows due to the consistency of arrow launch from the crossbow platform....but the lessons learned apply to all bows from traditional recurve to compound vertical bows. Charts are included that Jim used to build arrows taking in the considerations of physics and building on the prior work in the field.


Jeremy Johnson: Can’t Lose Bowhunting

Available on Amazon

Jeremy Johnson has produced what I consider to be one of the finest text a bowhunter could read; be he novice or one of long experience. Here one finds it all encased in a single text - and A to Z, step by step tutorial in the equipment setups and, more importantly, the skills needed to become a more successful bowhunter. With more than a little bowhunting experience in my background from which to draw, the words Jeremy has written all ring true.

In an entertaining and easily read format, Jeremy has set forth a world of sagacious bowhunting information; thing seldom seen in print in today’s profit-driven world. Rarely have I seen or read a text where no particular product or products are promoted. This is one. It touts no miracle items guaranteed to make you the deadliest bowhunter who ever stalked the mountains, hills, forest and plains. It does, however, contain the information - the knowledge - one needs to become a far better, and more productive bowhunter.

- Ed Ashby


Dr. Ed Ashby: Now, …

Available on Amazon

"Now, …" is an amazing 350 pages of bowhunting and “bush-bumming” how-to, knowledge, and lore, sprinkled with humor and bowhunting insights, told as only the Old Derelict can! Drawn from over 50 years of worldwide bowhunting experience these articles, written anonymously for over a decade for Archery Action, in Australia, are selected stories by Dr. Ed Ashby. They cover everything from his misadventure with Montezuma Beans and Six-Can-Stew to shoe selection for stalking, how to track game, how to practice for hunting shots, how to stalk, what skills define the successful hunter, making and using predator calls, why we miss shots at game and much, much more. Learn how an archer never known for his shooting ability became one of the world’s most successful bowhunters. Best known for his technical writings on terminal arrow performance, here the reader meets Dr. Ashby’s plain-spoken alternate persona – the Old Derelict Bowhunter.