Finally found this one in the rack.
Interestingly, Whitworth first took out a patent in 1853 for "Fluid Compression Steel" inwhich ingots were cast and while still ina fluid state in the inside (yet hardening in the outer) were put in a hydraulic press which eliminated "blow holes" in the metal and gave the finest grain structures found in that period. All such barrels were marked "Wheatsheaf".
"In 1852, Lord Hardinge, Commander-In-Chief of the British Army, being much discouraged with the rifles then used in the Army, commissioned Sir Joseph Whitworth, then the foremost mechanician on the day in fine measurements and accurate manufacturing, to make through investigations of the subject of rifling small-arms in order to discover the best form of rifling and most practical type of rifle for the British Service, After some two years of experimentation he invented and patented in 1854, the Whitworth hexagonal bore rifle with its mechanically made hexagonal bullet fitiing the bore of the rifle. This rifle was .450 caliber, the paper patch was 1.32 inches long weighing 530 grains, the hexagonal rifling having one turn in twenty inches. The Whitworth rifle was tested by the British Ordinance Board early in 1857 in competition with the Enfield rifle, at ranges from 500 to 1800 yards. The Whitworth rifle gave a mean deviation of 4.62 feet at 1,400 yards and 11.62 feet at 1,800 yards.
During the Civil War the U.S. Government important quite a number of fine Whitworth rifles and bullets for use by Sharpshooters, after having been equipped telescopic sights. They were considered among the finest and most accurate long range rifles used in that war."
Interestingly, Whitworth first took out a patent in 1853 for "Fluid Compression Steel" inwhich ingots were cast and while still ina fluid state in the inside (yet hardening in the outer) were put in a hydraulic press which eliminated "blow holes" in the metal and gave the finest grain structures found in that period. All such barrels were marked "Wheatsheaf".
Also, found this shot of an actual gov issued, scoped Civil War piece made by Morgan James. It was issued to Berdan's Sharpshooters. It seems James removed the Remington and Sons barrels and replaced them with a .58 caliber, 6 groove barrel of his own making using a mini bullet. Then, get this, he made an internally adjusted telescope and soldered the scope solidly to the barrel! The scope was 11 power.
Now, I have other notes saying the first internal adjustable scope was first produced by R. Noske of San Carlos, Ca. But, as he was born decades after James died...I guess not!
Anyway enjoy.