The Airgun of Meriwether Lewis

We can see from this first entry that an airgun was the center of excitement and controversy from the outset of the expedition.

Originally published in October, 2006

It has been 200 years since the members of the cross-country Corps of Discovery returned triumphant to St. Louis, Mo., with tales of their three-year exploration of the Northwest United States. Popularly known as the Lewis & Clark Expedition, the intrepid band of soldiers, guides and hunters made the journey to the West Coast and back with the loss of only one life. They gained an immeasurable knowledge of the great West and claimed more territory for our flag than any event since the Declaration of Independence.

Among their greatest contributions to history are their famous journals. On the very first page, in Meriwether Lewis’ first entry of what eventually totaled three year’s worth of notes, he wrote:

August 30, 1803. “Left Pittsburgh this day at 11’ock … went on shore and being invited on by some of the gentlemen present to try my airgun which I had purchased brought it on shore charged it and fired myself seven times fifty five yards with pretty good success; after which a Mr. Blaze Cenas being unacquainted with the management of the gun suffered her to discharge herself accedentaly the ball passed through the hat of a woman about 40 yards distanc cuting her temple about the fourth of the diameter of the ball; shee fell instantly and the blood gusing from her temple we were all in the greatest consternation supposed she was dead by [but] in a minute she revived to our enespressable satisfaction … .”

We can see from this first entry that an airgun was the center of excitement and controversy from the outset of the expedition. Not much has changed in the past 200 years. At different times over just the past 50 years, no less than four institutions have claimed they hold the original airgun in their collections.

The search for the original airgun from the expedition has lead to some interesting places. The earliest claimant was a ball-reservoir type airgun donated to the Smithsonian Institution in 1957. The donor believed he had the original airgun based on what he had read in the journals.

Capt. Lewis. Monday, June 10, 1805.“ ... Shields renewed the main Spring of my air gun we have been much indebted to the ingenuity of this man on many occasions; without having served any regular apprenticeship to any trade, he makes his own tools principally and works extreemly well in either wood or metal, and in this way has been extreenely servicable to us, as well as being a good hunter and an excellent waterman.”

This passage has been the subject of much speculation over the years and yet may be one of two key passages that help identify the original airgun. The donor theorized the mainspring repair was actually a solder job to the copper-ball reservoir on the underside of the gun. In an article published only months earlier, he had originally identified an Isaiah Lukens-marked airgun that is at the Virginia Military Institute Museum, as “The Lewis & Clark air gun.” Thus began 50 years of controversy.

Scholars of the expedition have always looked to the journals for clues as to the style and type of guns used on the expedition. The most recent editor of the journals is Dr. Gary E. Moulton. His editions, numbering 13 volumes and more than 1 million words, are considered to be the single most comprehensive account of the expedition.

The 2001 publication of the journals was popularly received by the large community of Lewis & Clark aficionados. Among those writing about the firepower of the expedition was a staff editor of Gun Report, Michael Carrick. Carrick delved into the journals, read all 13 volumes and made copious notes on any mention of the firearms used on the expedition.

Through a conversation with a fellow Lewis & Clark historian, Carrick was introduced to a most extraordinary manuscript, the diary of Thomas Rodney. Rodney was the brother of Delaware’s Caesar Rodney, a signer of the Declaration of Independence. In September 1803, he went west to assume a judgeship as an appointee of President Thomas Jefferson. On Sept. 8, 1803, Rodney’s and Lewis’ paths crossed in Wheeling, Va. (current West Virginia was then part of Virginia). And Lewis made note of the meeting in his journals.

Capt. Lewis. Sept. 8, 1803.“ ... dined with Colo. Rodney.”

Fortunately, Rodney was a bit more verbose about the encounter.

Thomas Rodney. Sept. 8, 1803. “Visited Captain Lewess barge. He shewed us his air gun which fired 22 times at one charge. He shewed us the mode of charging her and then loaded with 12 balls which he intended to fire one at a time; but she by some means lost the whole charge of air at the first fire. He charged her again and then she fired twice. He then found the cause and in some measure prevented the airs escaping, and then she fired seven times; but when in perfect order she fires 22 times in a minute. All the balls are put at once into a short side barrel and are then droped into the chamber of the gun one at a time by moving a spring; and when the triger is pulled just so much air escapes out of the air bag which forms the britch of the gun as serves for one ball. It is a curious peice of workmanship not easily discribed and therefore I omit attempting it.”

The airgun that Rodney described was unique enough to be instantly recognizable as the type designed by C.G. Girardoni and adopted by the Austrian military in the late 1700s. Girardoni was an inventor and designer who seemed to have a fascination with repeating firearms. He is now best known for his repeating airgun that was adopted by the Austrian army. The description of a Girardoni is unique to airgun mechanisms. The gun had a buttstock that also served as an air reservoir. This small air tank held 800 p.s.i. of air pressure delivered by a rod-piston pump device that took close to 1,500 strokes to reach capacity. On the right side of the rifled barrel was attached a small tubular magazine that held 22 .46-cal. lead balls. Gravity fed them into a sliding breech block held taut by a straight leaf spring. By flicking his thumb and forefinger against the breech and cocking the hammer with his off hand, the shooter could load and fire the 22 shots in under a minute, just as described by Rodney.

Airguns were nothing new in 1800. Some histories date them as early as 1560, but they were complicated and expensive to produce. Until Girardoni, their use in any numbers seemed impractical. It is estimated that the Austrians produced 1,500 airguns for use against Napoleon. Each soldier was equipped with a number of pre-primed air reservoirs and magazine tubes, each with 22 rounds of ammo. A battalion of men armed with such repeating rifles could lay down a devastating field of fire.

For collectors and historians alike, Carrick’s discovery was exciting news. The Girardoni system and its links to the Napoleonic Wars—and now the Corps of Discovery—made for fascinating conjecture.

Among those who have spent whole segments of their lives studying the history of the expedition of Lewis & Clark was Stephen Ambrose, a gifted historian and publicist. He had a personal obsession that intrigued him his entire life: the expedition of the Corps of Discovery. That interest culminated in his 1996 book Undaunted Courage.

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3 Responses to The Airgun of Meriwether Lewis

John wrote:
October 11, 2011

That airgun must have been quite a piece of work to impress so many indians so much in such a brief time.

spodeboy wrote:
May 26, 2011

watch video and you will find your answers: http://www.americanrifleman.org/videos/lewis-clark-air-rifle/

jerry proffitt wrote:
May 23, 2011

I would likw to know more about this air rifle. size of the bore,pellet, and "air bag" anything you can share would be of interest. thank you