New TSX Bullet
Rifle/Shooter – May Issue 2003
New Triple-Shock X-Bullet
By Clair Rees
There’s a new bullet on the market, and it’s going to get the attention of a lot of serious sportsmen. It was designed by Randy Brooks, co-owner with his wife Coni, of Barnes Bullets, and inventor of the original X-Bullet™. After extensive development and field testing, the original X-Bullet first appeared on the market in 1989. It was so successful Winchester adopted a very similar design four years later and called its version the Fail Safe.
Named the Triple-Shock X-Bullet™, the new bullet can be identified from the original X-Bullet by three rings cut into its all-copper body. These rings-along with a redesigned cavity in its nose-give the Triple-Shock X-Bullet some surprising advantages over conventional hunting bullets.
The Barnes press release announcing this bullet says, “The new Triple-Shock X three-ringed bullet provides significantly greater velocities, lower pressures and less fouling, without requiring an external coating.” It goes on to add, “The bullet delivers a triple impact-one when it first strikes game, another as the bullet begins opening, and a third devastating impact when the specially engineered cavity fully expands to deliver extra shock with maximum transferred energy.”
Those are some pretty bold claims. To see if they really held water, I visited Randy at the Barnes factory. Together with Tim Janzen, who heads up the Barnes R&D and ballistic lab, we did some testing to see if we could verify those claims.
Before we started shooting, I talked with Randy about his new bullet design and how it came to be developed.
“Five years ago we were experiencing some fouling problems with our X-Bullet,” Randy said. “We began experimenting with different ways to correct this, including a process that changed the molecular lay of the copper used in producing the X-Bullet. The revised molecular structure substantially reduced X-Bullet fouling. We’d met our goal, so we set the other experiments aside and incorporated the new process in our bullet-making technology. We also developed our XLC coating to reduce fouling even further.
“One promising technique we shelved involved cutting a series of rings into the shank of each bullet,” Randy added. “A little over a year ago I reviewed my notes on those early experiments. After examining the results, I decided to cut some more rings in the X-Bullet body and continue the experiments where we’d left off. I wanted to see how the rings might further enhance performance.
“During the entire summer of 2002, we experimented with various ring depths and cutting angles, and moved the grooves up and down the bullet’s shank,” he said. “We tried every combination and number of grooves we could think of. For instance, we even tried a combination of two shallow and two deep grooves cut into the same bullet.
“We eventually settled on using three grooves for our .308-inch bullet,” Randy pointed out. “The several cartridges and calibers we tested using the new, grooved bullets showed pressure reductions of up to 13.4 percent, or 8500 pounds per square inch (psi). This meant we could load more powder to boost pressures back to SAAMI standards and safely produce higher velocities.”
While the increase varied from cartridge to cartridge, Barnes’ testing showed an average velocity boost of 125-150 feet per second (fps). The improvement was slightly more dramatic with standard non-magnum cartridges. For instance, 150-grain bullets fired from a .270 Winchester yielded 150 fps greater velocities, while a 180-grain Triple-Shock X-Bullet from a .300 Remington Ultra Mag showed an improvement of 125 fps. Loaded in a.243 Winchester cartridge, 95-grain Triple-Shock X-Bullets delivered 195 fps faster speeds.
“Another highly interesting result is that cutting grooves into the bullet shank actually improves accuracy,” Randy said. “Grooves provide kind of a relief valve as the bullet metal flows under pressure while traveling down the bore. Instead of copper being dragged from the front of the bullet toward the base, this material expands into the grooves. This, in turn, changes the harmonics in the barrel and produces tighter groups.”
“After firing several hundred of the new bullets at our range, we’ve seen an average improvement in accuracy of roughly 25 percent,” said Tim Janzen. “Some five-shot 100-yard groups from a .300 magnum with 168-grain Triple-Shock X-Bullets have shown better than ½ MOA accuracy.”
“In addition to lower pressures, faster velocities and better accuracy, our Triple-Shock X-Bullet features a redesigned cavity that produces dramatic results on game,” Randy said. “The X-shaped cavity at the tip starts opening under very little pressure. The tip begins expanding immediately on contact, delivering an initial transfer of energy to the animal’s nervous system. As the bullet penetrates another 1 to 2 inches, the four copper petals continue opening. The rapidly expanding bullet causes tremendous compression of trapped air and body fluids, delivering a second shock to the nervous system.
“After penetrating another 3 to 6 inches, the X-Bullet fully opens to more than twice its original diameter,” he pointed out. “This further compresses trapped air and body fluids, delivering yet another deadly shock to the animal’s system.”
According to Randy, the Triple-Shock X-Bullet retains 100 percent of its original weight, and penetrates 28 percent farther than any lead-core bullet on the market.
“Animals are killed by tissue destruction, not foot-pounds of energy,” he said. “Destroy the heart and lungs, and you’ll kill any animal. The new Triple-Shock X-Bullet-as well as the standard X-Bullet-is designed to reach the vitals of any game, regardless of the angle the bullet enters or how much tissue it must pass through.
“I recently killed a large whitetail buck with a .300 Weatherby Magnum during a spot-and-stalk hunt in Kansas,” Randy noted. “The deer was quartering away from me at a range of 100 yards. I placed the 168-grain Triple-Shock X-Bullet behind the ribs, just forward of the animal’s hip. It passed lengthwise completely through the buck, destroying the lungs and breaking the off shoulder as it exited. The deer folded up on the spot.
“This is a controversial statement, but I maintain that any bullet that doesn’t exit game after a broadside shot is a failure,” Randy said. “If the bullet stops inside the body, it didn’t cause maximum damage.”
I’ve shot several different animals with the Barnes X-Bullet, with uniformly excellent results. One big Montana muley took a single leap before collapsing in a lifeless heap. I’m knocking on wood, but I’ve yet to wound a single head of game hit with an X-Bullet. All have been quick, clean kills.
I saw my first Triple-Shock X-Bullet in January, well after the close of pronghorn, elk and mule deer seasons. I’m looking forward to testing the new bullet on game, but that will have to wait until sometime later this year. I know that more than 250 head of various kinds of game have already been killed with Triple-Shock X-Bullet prototypes used by members of the Barnes advisory staff.
In the absence of suitable flesh-and-bone targets, Tim created a 40-inch-long block of 10 percent ordnance gelatin. In cross section, the block measured 8 inches square. To help the gelatin set up, the block was refrigerated overnight. The block was then placed at the end of Barnes’ 100-yard underground range (which is adjacent to a separate 300-yard range). Standard specifications for gelatin block testing calls for a temperature of 39 degrees Fahrenheit. When we preformed our test, the gelatin temperature had risen slightly to 40.2 degrees.
The rifle used in the test was a custom-barreled Model 70 Winchester chambered for the .300 Weatherby Magnum cartridge. A 180-grain Triple-Shock X-Bullet was loaded ahead of 80 grains of RE 22, producing 3300 fps of velocity at the muzzle. At 100 yards, this load punched three-shot groups measuring 5/8 inch (0.625 inch) between centers.
Once the bullet was fired into the end of the gelatin block, a plastic tube was inserted into the resulting hole. Red dye was then pumped into the cavity created by the bullet’s passage. This produced a graphic picture representing tissue damage the bullet would create as it traveled through a target animal. The tremendous pressure ruptured the bottom of the block, allowing part of the dye to leak through.
The Triple-Shock X-Bullet penetrated 31 inches into the block. As it passed through the gelatin, it expanded from .308 inch to .660 inch, or more than double its original diameter. It also retained 100 percent of its original weight.
Firing these bullets at various velocities into a water tank gives a graphic illustration of how the new bullet incrementally expands when it first strikes, then travels through an animal. This corresponds to the bullet’s “Triple-Shock” description..
For 2003, Barnes’ new Triple-Shock X-Bullet is available in five different calibers, including 95-grain .243, 100- and 115-grain .257, 130- and 140-grain .277 (.270), 140- and 160-grain .284 (7mm) and 150-, 168- and 180-grain .308 (.30 caliber) versions. While three rings in the bullet body are more or less standard, I’m told some future calibers may sport two (or maybe four) rings instead, depending on which configuration produces optimum results.
Considering the outstanding success the original X-Bullet has enjoyed, I’m betting the new Triple-Shock X-Bullet will be in high demand when next hunting season rolls around. The promise of lower pressures, higher velocities, less fouling, improved accuracy and the X-Bullet’s time-proven effectiveness on game will be hard to resist.