Sunday GunDay: 6XC Tubb 2000 High Power Competition Rifle
For this Sunday GunDay article we feature a “blast from the past” — David Tubb’s engineering tour de force, the Tubb 2000, or “T2K” for short. With the remarkable T2K, David earned multiple NRA High Power championships, and David shot the first-ever perfect score in the NRA Long-Range “any sights” championship two decades ago.
Our write-up this week focuses mostly on “hardware” because David’s performance with the rifle speaks for itself. He has won eleven High Power National Championships at Camp Perry, and in 2004 David mounted a scope to his rifle and captured the Long-Range “any sights” Championship with a 1450/1450, the first and only perfect score ever logged at Camp Perry. He did this all with his trusty 6XC-chambered T2K, shooting the DTAC 115gr bullet in a 1:7.5″-twist Schneider P5 barrel. For more information about this remarkable competition rifle, read on.
[Editor’s NOTE: Because this is an article from our older Archives, some technical details may have changed with time. For all specifications on current TUBB rifles visit DavidTubb.com.]
Mag-Feed Action with Unique Bi-Camming Bolt
The action is machined from 17-4 stainless steel to true benchrest quality standards. The design features a solid top with a loading port. This increases action stability, stiffness, and strength. The loading port is easily accessible and is angled to aid the shooter in single loading rounds. The Tubb 2000 is fed via 10- or 20-round box magazines.
“I prefer using 20-round magazines with the Tubb 2000 because it provides a secure hand hold when shooting off the bipod. For across the course competition, the 10-round magazines are the best choice as they do not encumber sling-supported shooting positions. There is no difference in the functioning or reliability of either capacity magazine.”
One-finger Bolt Operation
Low effort bolt operation was a key goal in the design of the Tubb 2000 action. The exclusive bi-camming design employs two cams that engage during bolt lift to radically reduce bolt lift effort. Bolt lift is 75 degrees. The cone-faced bolt has two locking lugs which are narrower and taller than on conventional actions. This design allows the magazine to be mounted higher in the action for smoother, more positive feeding. The bolt handle is designed for superior performance in sustained fire operation. Its ergonomic shape allows operation with a single finger, if desired. The bolt is machined from 8620 carbon steel and rides back into the butt extension, under the shooter’s face so the bolt can be operated without the shooter having to change his head position. This low center of gravity also improves the rifle’s feel and performance under recoil.
The action features a full-length Picatinny rail that will accept Weaver®-style mounts. The action’s adjustable sight mounting system allows the rail to be mounted at one of three pre-set mounting angles — 0, 5, and 10 degrees — to allow the shooter to level the sights to fit his shooting style. A custom base is available to mount match iron sights. All barrels have a small section at the muzzle turned down to accept a clamping-style front sight mount or cant indicator.
The T2K’s Lock Time is ONE millisecond — over three times faster than a Model 70 Winchester.
Barrel Configuration
Tubb 2000 rifles featured hand-lapped stainless steel match barrels with the exclusive “Tubb Contour.” This unique contour maximizes accuracy and minimizes weight — it’s the perfect balance. According to David: “It’s a contour where the barrel wouldn’t shoot one bit better if it was one bit bigger.” The Tubb 2000 was conceived as a “switch barrel” gun — it’s designed to be easily re-barreled by the customer. This feature means that the same rifle can support different calibers and shooting disciplines. Finished barrels in a variety of calibers were available for “do-it-yourself” installations. The gun shown here has a Schneider barrel.
The Tubb 2000 has, over the years, been offered in a variety of chamberings including: .22-250; .243 Winchester; 6mmBR Norma (6BR); 6XC; .260 Remington; 7mm-08; and .308 Winchester. Available accessories include finished barrels, extra 10- or 20-round magazines, cleaning rod guide, adjustable bipods, custom adjustable handstop, fore-end weight rail, and cant indicator.
Trigger, Stock Adjustment and Other Features
The Tubb 2000 uses the superb Anschütz® fully-adjustable two-stage trigger (with safety); one of the finest available to the precision rifleman. This trigger can also be adjusted to provide single-stage operation. The buttstock assembly, forend, buttstock clamping block, and magazine housing, trigger guard assembly are made from 60-series aluminum, hard anodized in the customer’s choice of 6 colors: light and dark teal, purple, red, forest green, and black. (The T2K Tactical (see below) comes in matte black only.) These four parts are each available in any of the listed colors, allowing the purchaser to design his own distinct rifle.
The buttstock is FULLY adjustable for length, height, cant (angle), and offset. The cheekpiece is adjustable for height. An easily accessible knurled wheel allows the shooter to adjust the cheekpiece from the shooting position. Shooter comfort is further augmented by an ergonomic pistol grip. All adjustment features on the Tubb 2000 were designed for easy shooter access. The butt extension, clamping block, shock housing, and buttplate all have index marks to allow the shooter to record and repeat adjustment settings. The tubular fore-end can be rotated and positioned to accommodate the shooter’s preference. An integral accessory rail accepts a custom adjustable handstop or bipod. The fore-end also incorporates a built-in barrel heat wave blocking system which eliminates optical distortion in the sighting plane.”
David Tubb Explains T2K Stock Adjustments
I advocate setting stock length a little longer than most people might. I am a firm believer that it is best to “reach” slightly for the pistol grip as this ensures a strong, secure hold on the rifle. I pull the rifle firmly into my shoulder pocket when shooting offhand, and also prefer to have what I would characterize as very firm contact between rifle butt and shoulder in the sitting and prone positions as well. When using a sling in prone or sitting, stock length (and sling tension) should be great enough so that, at the least, you have to push the buttpad forward with your hand in order to place the stock into the shoulder pocket. My buttstock is shortest offhand and longest prone. If my standing setting is “0”, I’m usually out about 1-1/2 inches for sitting and about another inch for prone. I have found that many people tend to shoot with a stock that’s too long in sitting and too short everywhere else.
I have found the cast off/on adjustment feature on the buttstock to be of great help to me in attaining the natural shooting positions I desire. For prone, I offset the clamping block so the buttplate moves outward [the index mark on the clamp is to the right of center on the scale on the receiver extension tube]. I swing it a little bit inward for offhand and slightly more inward for sitting. The amounts of cast on/off (in clock-face terms) are approximately 6:30 for standing, 4:30 for prone, and 8:00 o’clock for sitting.
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Stock Position Diagrams © 2004, Glen Zediker, David Tubb, and Superior Shooting Systems, used with permission.
Stock Length Adjustment Procedure
The buttstock is adjustable in length 4+ inches. This adjustment is accomplished by moving the buttplate tube in or out after loosening the four screws on the clamping block. Ensure that the buttstock tube is fully contained in the block. The extent of rearward (lengthening) movement is determined by the front of the buttstock tube fitting flush with the front of the block.
Stock Cast and Cant Adjustment Procedure
The buttstock is adjustable for cast or offset by loosening the four screws on the clamping block and swiveling the block on the receiver extension tube. The buttplate itself is adjustable for cant up to 360 degrees and after loosening the screw directly in the center of the rubber recoil pad is adjustable for height at approximately 1-1/2 inches. The cheekpiece is adjustable vertically approximately one inch. The vertical cheekpiece adjustment is accomplished via the top knurled ring. The lower knurled ring will then secure the setting.
About David Tubb — Tubb 2000 Designer
David Tubb is arguably the winningest centerfire rifleman in history. He has won a record eleven NRA National High Power Rifle Championship titles at Camp Perry, along with six NRA Long Range HP Championships. In addition, David is an NRA Silhouette Rifle legend, having won nearly 30 open, individual National Championship titles in all four rifle categories. David has also won seven Sportsmen’s Team Challenge Championships and multiple Wimbledon Cups. Another big win by David was the 2019 NRA ELR Championship in Heavy Gun Class.
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For more information on the David Tubb Accuracy |
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All photos and quoted text Copyright © 2004, Zediker Publishing and David Tubb, All Rights Reserved.
