Well there's not a lot of information here to understand what exactly your asking but if it's E. Remington and sons it has to be prior to 1888 when it then became Remington Arms Co.
I have a octagonal barrel .32 caliber Remington Patent date May 3, 1864 - What would it be worth?
Which model, what condition?
Octagonal barrel could be a plethora of different guns anywhere from a rolling block to a pump. Need to identify what it is first and condition, condition, condition for values.
I too have a rifle matching this description. Any information would be of interest.
about two hundred and seventy five depending on condition
Just the barrel?
No
Go to http://www.remingtonsociety.com/forums/ and ask. Describe all the markings and provide pictures if possible.
Octagonal barrel rifles have several advantages over other types of rifles. Firstly, the octagonal shape of the barrel provides increased rigidity and stability, resulting in improved accuracy and precision when shooting. Additionally, the design of the octagonal barrel allows for better heat dissipation, reducing the risk of overheating during prolonged use. Lastly, the unique appearance of octagonal barrel rifles adds a touch of traditional craftsmanship and aesthetic appeal to the firearm.
The value of a Remington Model 12 in .22 caliber with an octagonal barrel and in very good condition typically ranges between $300 to $600, depending on factors such as specific features and market demand. The serial number 138470 indicates it was produced in the early 20th century, which can add to its collectible appeal. To get a more precise valuation, it's recommended to consult a firearms expert or appraiser familiar with vintage rifles.
No
A 243 calibre rifle is Just that. The bore (internal measurement of the barrel) is 0.243 of an inch in diameter.