The Georgia Project: Part 2

The Georgia Project: Part 2

Full chokes deliver longer shot strings.

Have you ever wondered exactly what a payload of shot looks like as it contacts soft tissue, or even when exiting the muzzle of a shotgun?

//

The use of high-speed photography during a week's worth of test tunnel ballistics has provided new insights about shotshell loads in flight. Using a special camera with lighting that produces photos at 25,000 frames per second, new answers to some age-old questions have surfaced.


When Part 1 of the Georgia Project concluded, the next step was to employ light bulbs that cost about $8,000 each to slow down the image of a shot cloud, wad and pellet penetration into soft tissue.



Alan Corzine, chief ballistician of Pinnacle Ammunition Company, researched a massive number of shotshell loads using slow-motion photography. He studied shotshell pellets and wads in flight frame by frame to gain a better understand what is happening when a payload of #3 steel or even iron buckshot leaves the muzzle.

From the time a payload of wad and shot leaves the muzzle until the camera completes it run of photos, only a split second has passed. The payload has only traveled a few feet across the photo field, but about 300 frames of digital imaging have been captured. A careful study of the physical act of the pellets and wad can be completed in detail.


Wad Stop Means No Stop
One of the most solid pieces of information to come from the photographic study, at least in terms of my work, is the fact "wad stop," a term I coined years ago, does not exist. I was dead wrong. I could not have been farther off base.


We viewed a payload of shot moving out of a wad stop style choke such as Pattern Master, Dead Ringer and others. Shooting my own Dead Ringer, which was thought to be a wad stop design with a full 360-degree interior choke ring, the payload becomes trapped while still encased in the plastic wad because the edges of the wad pedals hit the ring and turn inward, developing a crimp of sorts that hold the shot inside of the wad.

As the crimp develops, the pellets are forced back by normal setback forces, and the center of the plastic wad starts to bulge. The encased column of shot will fly as a slug for a few feet beyond the muzzle. The change in release, when compared to a standard choke, causes the payload to stay together farther from the muzzle. The results are tight patterns out to extended ranges, regardless of the shot size, or even in most cases, pellet type.

The Georgia Project, Part 1


Don't miss the first part of our story, click here.

 

In wad stop chokes that use a series of raised dogs to contact the wad, the reaction is not as complete. As a result, choke tubes like Pattern Master work better with larger pellets.

It takes less crimp action to lock down large shot, whereas small pellets tend to leak through the center of the payload core unless crimped by the use of a ring system.

When a tight full choke is photographed releasing its payload of wad and shot, a very long shot string develops, versus a short shot string produced by a modified choke. We measured shot strings that started to form almost at the muzzle. The strings were a foot long only a few feet from the barrel, and increased to 14 feet at 40 yards.

Modified chokes produced shot strings less than seven feet long. So, you are not shooting as tight a pattern as you think with a full choke, but rather a very, long thin tube of shot.

It is easier to hit with because the string gives a wide margin for the bird to fly through, but as the bird hits the string of skimpy pellets in the column, the amount of shot (payload pellet count density) is greatly reduced from that of a short shot string coming into target contact from a modified choke.

If the new evidence throws a crimp into your thinking about chokes, don't feel bad. I, too, was set back on my heels, and then took up a course of deep reflection on the subject.

The more I study these outstanding photo results, the more I can see what both wad and shot are doing as they head downrange. After 27 years of chasing shot clouds on paper, I can now say I have taken a ride on a payload of shot, at least in a virtual reality sense.

Taking Data to Water
We pressed our ballistics research into action off of Bellingham, Wash., hunting sea ducks. Our group included Corzine, guide Duke LeVan, cameraman Bill Saunders and Ron Latschaw, founder of the Final Approach layout blind. We pulled anchor on Latschaw's "Willie" custom-built, 21-foot duck boat, and headed out onto the clam beds of Bellingham Bay. With good weather and a decoy spread fit for king set out by LeVan in the chase boat, we were loaded and ready to test the Pinnacle non-toxic ammunition, the very reason for the research project.

As I changed chokes to shoot fast-moving, tough surf and white-wing scoters that flew low over the water, I made careful photographic and gunning notes of the background pellet contact against the waves as rounds were shot at mostly crossing targets.

My Remington 11-87 mounting the Dead Ringer plastered a single spot on the water with #2s -- even at 40 yards -- so hard it looked like someone had dumped a bucket of shot in one place. Standard Rem choke modified produced a wider pattern by far, but again most of the shot got downrange in a reasonably tight mass. Full choke, however, sent strings of shot boiling across the blue water, producing spikes high into the air in long rows as pellets slammed into the wave tops.

While the details of the ballistic effects regarding the new Pin

nacle non-toxics are best left to another time, it is safe to say that when short shot string patterns hit ducks, birds died faster with less aftershock trauma than birds gunned with less choke, meaning longer shot strings.

If the bird is coming straight on and you get all of the string into the target, full chokes can deliver devastating loads. However, side and slight-angle shots can be a different story. Now I know why I tend to hit several teal crossing at a right angle when shooting a full choke and trying for the lead bird. In effect, the 14-foot-long string of pellets acts like a chain across the face of the whole flock. One-shot doubles can result. I once killed a full limit of six ducks with three shots when leading a big flock of teal. The fact is it was just long shot string going to work -- and a pile of luck. I've never done it again, nor am I likely to.

L.P. Brezny is a ballistics expert from Piedmont, S.D.

Recommended for You

Ready to grill up some delicious, juicy waterfowl burgers? This Horseradish Duck Burger Recipe is made with ground duck breast fillets and a kick of horseradish. Recipes

Horseradish Duck Burger Recipe

Scott Leysath

Ready to grill up some delicious, juicy waterfowl burgers? This Horseradish Duck Burger Recipe...

Keep your retriever sharp in the offseason. Retriever

Waterfowl Workouts: 3 Summer Duck Dog Drills

Tony J. Peterson

Keep your retriever sharp in the offseason.

Here's how to cash in on the spreading numbers of white-fronts. Hunting Tactics

Take Advantage of the Specklebelly Surge

John Gordon

Here's how to cash in on the spreading numbers of white-fronts.

See More Recommendations

Popular Videos

Cowboy Fernandez Commemorative Yentzen Classic Duck Call

Cowboy Fernandez Commemorative Yentzen Classic Duck Call

As Groves, Texas duck call maker Sure-Shot Game Calls celebrates their 60th anniversary during 2019, company CEO Charlie Holder shows off the limited edition Yentzen Classic aimed at commemorating the life and times of company founder Jim 'Cowboy' Fernandez. With a special autographed box and a laser engraved call body, the Cowboy Classic is a perfect way to honor the legacy of the 1959 world duck calling champ and inventor of the double-reed duck call.

Franchi 12-Gauge Affinity Semiauto Shotgun

Franchi 12-Gauge Affinity Semiauto Shotgun

Craig Boddington and Eric Poole take a look at the new modern Franchi Affinity shotgun.

Women

Women's Waterfowl Lineup

SITKA Gear waterfowl product manager Jim Saubier shows off the company's full line-up of women's waterfowl hunting gear for 2019. From warm and moisture-wicking base layers to water and windproof outer layers, this is a complete system for women who love to chase fall and wintertime ducks and geese across the four flyways!

See more Popular Videos

Trending Stories

Let's face it, that old mud motor from two years ago isn't cuttin' it any longer.

Of course, it Boats

8 Best Mud Motors for 2016

David Hart - May 26, 2016

Let's face it, that old mud motor from two years ago isn't cuttin' it any longer. Of course,...

As Groves, Texas duck call maker Sure-Shot Game Calls celebrates their 60th anniversary during 2019, company CEO Charlie Holder shows off the limited edition Yentzen Classic aimed at commemorating the life and times of company founder Jim 'Cowboy' Fernandez. With a special autographed box and a laser engraved call body, the Cowboy Classic is a perfect way to honor the legacy of the 1959 world duck calling champ and inventor of the double-reed duck call. Calls

Cowboy Fernandez Commemorative Yentzen Classic Duck Call

Lynn Burkhead - January 28, 2019

As Groves, Texas duck call maker Sure-Shot Game Calls celebrates their 60th anniversary during...

While there's no guarantee they'll make you a better shot, these 8 newly-designed shotgun choke Accessories

8 Best Choke Tubes for 2017

Wildfowl Online Staff - October 25, 2017

While there's no guarantee they'll make you a better shot, these 8 newly-designed shotgun...

See More Stories

More How-To

It seems almost impossible - 653 clays broken in 3,600 seconds. An hour devoted to nothing but How-To

3 Surefire Tips to Becoming a Better Shotgunner

Brad Fitzpatrick - February 19, 2016

It seems almost impossible - 653 clays broken in 3,600 seconds. An hour devoted to nothing but

Jim Orth needed a simple blind for hunting Lake St. Clair. A staffing recruiter and outfitter from How-To

Simple and Easy DIY Boat Blind

Mike Marsh - September 01, 2016

Jim Orth needed a simple blind for hunting Lake St. Clair. A staffing recruiter and outfitter...

When Mark Buckwalter was nine, he hunted an oxbow that flowed into the Susquehanna River. It was How-To

Trash to Treasure: DIY Duck Blind

Mike Marsh - March 21, 2016

When Mark Buckwalter was nine, he hunted an oxbow that flowed into the Susquehanna River. It...

See More How-To

GET THE MAGAZINE Subscribe & Save

Temporary Price Reduction

SUBSCRIBE NOW

Give a Gift   |   Subscriber Services

PREVIEW THIS MONTH'S ISSUE

GET THE NEWSLETTER Join the List and Never Miss a Thing.

×