Home Page: Day by Day with Lewis and Clark
Firearms of the Lewis and Clark Expedition:
A Review of Research
By Stuart Wier
Boulder, Colorado June 3, 2004.
Modern replica of a 1792 U.S. contract rifle, modified for the Expedition.
Harpers Ferry.
This report is a summary of what now is known about the firearms of the Lewis and Clark expedition. Some of the views summarized here are matters for debate and in such cases I present the conclusion which appears to me to have the preponderance of support and evidence in its favor.
The Lewis and Clark expedition carried many different kinds of guns. There were military guns and civilian guns, rifles and muskets, guns for hunting buffalo and guns for hunting squirrels, one small cannon, two miniature pocket pistols, and even an air gun. Firearms were essential tools for survival in the unmapped and unknown wilderness, remote from all sources of aid and supply. There was of course the possibility that guns might be needed for defense in case of Indian attack, but describing the guns primarily as weapons is misleading. Jefferson's instructions to the expedition clearly state that in all relations with the natives they were to "treat them in the most friendly and conciliatory manner which their own conduct will permit." The daily value of firearms was hunting for food and to collect specimens for natural history collections.
Captain Meriwether Lewis obtained fifteen military rifles from the U.S. Arsenal at Harpers Ferry, Virginia, and personal rifles were brought by civilian hunters, by Captain William Clark, and probably by Lewis. There were U.S. service muskets brought by soldiers posted from other units, and muskets owned by the French-Canadian boatmen. Lewis brought an air gun and a pair of pistols, and Clark brought an "elegant fusil" and a squirrel rifle. A swivel gun, a small cannon, was mounted on the keelboat and the pirogues had blunderbusses. Exact details of the expedition's firearms are lost to us since the only possible known surviving guns are the air rifle and Clark's small rifle and those are debatable. However, very similar guns of the period survive and are well known, letting us see and use guns like the guns the expedition relied on.
All the guns of the Lewis and Clark expedition were single-shot, muzzle loading, black powder guns with flintlock ignition. The notable exception is Lewis's air gun, which on several occasions astonished native Indians meeting with the expedition in council, since it fired several times without relaoding and since it was nearly silent.
Expedition Rifles
Initially Jefferson and Lewis envisioned an expedition of fifteen men: Lewis, a lieutenant, two sergeants, ten private soldiers, and a language interpreter. Lewis visited the U.S. Army arsenal at Harpers Ferry from March 16, 1803 to April 18, 1803, to obtain supplies for the journey, including fifteen rifles. Some of what he required came directly from stores, and other material had to be modified or made new, explaining his long stay at Harpers Ferry. The single most demanding item was a collapsible iron boat frame, intended to be assembled and covered with hides when the journey reached waters too small or inaccessible for the larger wooden boats used in the voyage of discovery.
Until 1999 it was thought that the military rifles obtained by Lewis from Harpers Ferry were the standard issue Model 1803 rifle of the U.S. Army. However this model was not actually manufactured until 1804 and so could not have been obtained by Lewis during his 1803 visit. He appears to have taken the U.S. 1792 contract rifle, overhauled to bring the guns up to top condition and to make some alterations to suit the needs of the expedition. For the complete case for the expedition's use of modified 1792 contract rifles see "The U.S. Contract Rifle Pattern of 1792", by Frank A. Tait, Man At Arms Magazine, Volume 21, Number 3 (June, 1999).
The modifications included swivels for slings and new flintlocks. Probably the barrels were shortened from 42 inches to a length of something like 36 to 33 inches. The shorter length would have been very handy on the expedition, carried by hand on boats and in rough terrain. The barrels were originally 0.49; some sources say they were rebored for the expedition to near 0.54 caliber. Fifty-four caliber is better for the large game of the west than 0.49, though of course Lewis could not have foreseen that.
Replica of expedition rifle, Harpers Ferry National Historical Park, National Park Service.
On April 20, 1803 Lewis wrote to Jefferson "My Rifles, Tomahawks & knives are already in a state of forwardness that leaves me little doubt of their being in readiness in due time." Lewis departed Washington for the west on July 5, 1803. On July 8, 1803 he wrote to Jefferson from Harpers Ferry, where he had just completed arranging wagon transport of his Harpers Ferry supplies to Pittsburgh. "Yesterday, I shot my guns and examined the several articles which had been manufactured for me at this place; they appear to be well executed."
The Model 1803 rifle may have been based, at least in part, on the gun design Lewis requested for the expedition. Secretary of War Henry Dearborn wrote to Harpers Ferry on May 25, 1803, requesting a prototype of a new rifle and suggesting some features that were used in the Model 1803 rifle. Gunsmiths there would have remembered the rifles Lewis had modified for the western journey, and the guns created for the expedition may well have suggested some features incorporated in the Model 1803 rifle. As late as December 2, 1803 Dearborn again wrote to the superintendent at Harpers Ferry saying that "The iron ribbed Rifle in my opinion is an excellent pattern, with the following very trifling alterations...." Clearly the "Model 1803" rifle was not available for Lewis by early summer 1803.
The modified 1792 contract rifle was apparently identical to or very similar to the Model 1803 rifle in some respects, including the patch box, the stock made of seasoned maple, and the side plate. The lock apparently was the same as the lock on the first Model 1803 Harpers Ferry rifles. The 1792 rifle differed from the Model 1803 in being full stock, possibly with a 42 inch barrel of 0.49 caliber (compared to a half stock on a 34 inch barrel of 0.54 caliber for Model 1803 rifle) and octagonal for the entire length (the model 1803 is partly round). The rear ramrod pipe and trigger guard had differing patterns. See Tait's report for photographs and details.
There are several references to "short rifles" in the expedtion journals:
Lewis, April 12, 1806: "we caused all the men who had short rifles to carry them in order to be prepared for the natives should they make any attempts to robe or injure them."
Ordway, June 18, 1806: "Drewyer and Shannon Sent on a head to go to the villages of the pell-oll-pellow nation they took one of the Short rifles in order to git a pilot if possable to go over the moutn with us."
Lewis, August 11, 1806: "... the ball had lodged in my breeches which I knew to be the ball of the short rifles such as that he had".
What were the "short rifles?"
The term short rifle may have been a simple way to refer to the rifles prepared at Harpers Ferry. In overhauling the rifles for the expedition Lewis could have had the barrel lengths reduced from 42 inches, perhaps to about 36 inches or even 33 inches. Hunters know that there is a real difference in handling guns with 33, 36, and 42 inch barrels, and this difference is even more pronounced when traveling in small boats. Lewis may have desired a handier rifle than one with a 42 inch barrel. Some additional if slight support for Harpers Ferry making shortened barrels is that the expedition rifles probably contributed to the design of the Model 1803 rifle which has a 33 inch barrel.
Also, some rifles were shortened during the expedition. Zoa L. Swayne (2003) has spent more than 30 years collecting Nez Perce accounts of the expedition-Nez Perce interactions. She describes a Nez Perce observation of Shields repairing two guns whose "muzzles had burst" by sawing them off and making "short guns" of them. "Captain Clark saw Speaking Eagle looking at those short guns and spoke with his hands, 'Do you want to trade the long gun we gave you for guiding us for this short gun?' 'A-a-a-a' Speaking Eagle said, thinking that a short gun would handle better. He handed over his long rifle for the sawed off gun."
I think both explanations are correct. Lewis could not tell, from looking at a bullet, whether it had been fired from a rifle whose barrel had been cut off, or from one of the same caliber with an unaltered barrel. Surely he recognized the caliber of the ball, and it was unique to the "short rifles," the ones made at Harpers Ferry. Also the Harpers Ferry guns were the best rifles in the party and that would explain Lewis's direction that they be on hand in case of attack on April 12, 1806. No commander would choose sawn-off guns with less accuracy for the weapon of choice.
At the moment I believe the fifteen expedition rifles were modified 1792 contract rifles, with full stocks, new Model 1803 locks, and barrels approximately 36 inches long and rebored to something in the 0.50 to 0.54 caliber range.
Other Rifles
Civilian hunters enlisted for the expedition, including the "seven young men from Kentucky," apparently brought their own firearms. They had to: Lewis's requisition of fifteen rifles at Harpers Ferry was not enough for the party of more than forty men who began the journey in May 1804. Drouillard, the French-Shawnee interpreter and perhaps the best hunter of the expedition undoubtedly used his own gun and it surely was a rifle.
Kentucky-Pennsylvania rifle
The common rifle of the day, of the western hunter and backwoodsman, was the "Kentucky" rifle. These typically American guns were often made by gunsmiths in eastern Pennsylvania, and are also called the Pennsylvania rifle. The hunters usually called them long rifles since they were typically 57 to 60 inches long and sometimes more than 65 inches. Barrels were generally 40 inches or more and the caliber was around 0.50. Functionally they are very much like the 1792 U.S. contract rifle -- in fact the contract rifles were made by gunsmiths in Pennsylvania who usually made long rifles -- but long rifles typically had more ornamentation such as fancy engraved patch boxes and wood carving, and more elaborate trigger guards and side plates. These guns were made one at a time by individual gunsmiths. Many fine examples survive of this handsome and famous style and are the subject of intense study. The books by Kindig and Kauffman listed in the Sources of Information below are two of the best.
Muskets
A musket is a smoothbore - the interior of the barrel is smooth unlike the rifle which has spiral grooves to impart spin to the ball. Muskets are easier and faster to load, an advantage in battle, but are considerably less accurate than rifles. Muskets can also fire small shot for hunting birds, like a modern shotgun. Since the expedition used firearms chiefly for hunting, and rifles were surely used by the better hunters for large game, muskets with shot would have generally been used for hunting birds.
We know Lewis intended from the beginning that muskets would be used on the journey. His 1803 list of supplies includes "125 musket flints." Some of the party, enlisted men coming from other units, brought their issue firearms, U.S. Model 1795 muskets. The Model 1795 musket was made in Springfield Massachusetts at the Springfield Armory, from 1795 to 1814, and at Harpers Ferry beginning in 1801. The total production was 80,000 to 85,000 guns. This gun was the first official musket model made for the U.S. government. The barrel is 44