The "Insider" is devoted to looking at what is going on inside Browning - information you won't get anywhere else.
It has been 55 years last week since Watson and Crick announced their discovery of the double helix structure of DNA . . . and the world of genetics was changed forever. In an event of almost similar proportions - well, at least for rimfire shooters - it has been just about three and a half years since Browning announced the new T-Bolt and its Double Helix® magazine system. Although not nearly as world-renown, the Browning inventors, Potter and Cook (Dwight Potter and Ryan Cook) broke new ground by creating a 10 round magazine with the reliability of a rotary design and the slim compactness of a vertical magazine.
The ten-round Double Helix uses a torsion drive spring and dual interlocking gears to maintain correct timing and cartridge alignment for smooth, reliable feeding. The smooth, rounded exterior contours of the Double Helix, along with twin gripping grooves, tapered shape and a slightly extended baseplate design make insertion easy. The exposed edge of the gear makes loading and unloading equally easy by allowing the spring tension on the cartridges to be relieved.
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| Shown is Ryan Cook - half of the Potter and Cook team - holding Browning T-Bolt and the Double Helix magazine. |
According to Ryan Cook, co-designer, the Browning Double Helix design had its beginnings when partner Dwight Potter began experimenting with an idea in early 2003 that would combine two rotary magazines into one in order to 1) make the magazine slimmer overall, 2) allow a rifle to be much narrower from side to side, 3) make action height shorter at the magazine and 4) create reliable function under all conditions. Cook developed the external geometry and gearing system for timing and perfected the magazine's operation for use specifically in the new Browning T-Bolt Rimfire System (also designed by Cook).
To understand the significance of this improvement you must take the Double Helix test. First, compare the Double Helix magazine for size with the competition's single wheel rotary magazine. Then do the same with two of the competitions 5-round stacked magazines held side to side. Then compare the easy of loading, insertion and unloading. And remember, the standard magazine holds 10 rounds with 22 Long Rifle; the magnum magazine holds 10 rounds with 22 Mag and 17 HMR. We think you will see that nothing else even comes close.
The Browning Double Helix was designed right here in Morgan, Utah where Potter and Cook work along with the rest of the engineers, model makers, test/quality technicians and support staff of the Browning Research and Development team.
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