The Model 8 and the updated Model 81 were the predecessors to Remington's 740 line of autoloaders. The Model 8 was designed by John Moses Browning and C.C. Loomis. It was produced from 1908 to 1936. Total production was about 80,600 units. They are not rare rifles. The Model 8 was offered in .25, .30, .32 and .35 Remington. The smaller cartridges were all basically rimless counterparts to the .25-35, .30-30 and .32 Special Winchester cartridges. The .35 Rem was more unique, being more powerful than a .351 Win SL, less powerful than the .35 Winchester.
The rifle was updated in 1936 as the Model 81 and was produced until the introduction of the Model 740 in 1950, about another 55,000 units. The .25 Remington chambering was dropped, and the .300 Savage was added. They are a bit heavy, but serviceable rifles. There are a few still in use in deer camps today, I've heard, but I don't personally know anyone who uses one. I see them listed at Ellwood Epps from time to time, usually about $400.00 IIRC. Incidentally, all this historical info is direct from the Remington webpage. Just go to "Sportsmen's Library">"History">"Firearm Models" and you'll find history on most of Remington's long guns.