This Benjamin Model is part of 3 rifles that are in a series. The 340 is a .175 BB rifle. The model 347 is a .177 Caliber Pellet rifle and the 342 is a .22 caliber pellet rifle. this line of air rifles was made between 1969 to 1986 (Model 340) and 1969 - 1992 (models 347 & 342)
I suggest that you go to the Crosman homepage ( they own Benjamin) and click on "Download a manual" there you will find the owners manual and parts diagram for your rifle. See related link.
Benjamin made a model 347 from 1969 to 1992 it was a pump handle that fired a single shot .177 pellet. As far as I know Benjamen never made a model 357 ( I may be wrong) but they have just come out with the Benjamin Rogue that fires a 357 caliber Pellet. This is PCP (PreCharged Pneumatic) class rifle. These are the most powerful class of air rifles today. The Rogue fires a 8 shot 357 caliber clip. The rifle cost around $1300. The 347 is designed for target and rodent control. The Rogue is designed for small to medium game hunting. The Rogue is not the largest caliber pellet rifle. Today the largest is the 50 caliber Dragon Claw air rifle by Sam Yang.
Benjamin ( who is owned by Crosman air gun) recommends 10 pumps. Over pumping may damage the rifle. You can still get the owners manual for this rifle for free. Go to the Crosman link below and click on "Download a manual" at the bottom of the web page, then click on Benjamin and locate your rifle.
The Benjamin model 347 was made between 1969-92. it's a single shot pump rifle. In order to give an estimate of value please state the condition of the rifle. Is it still working? Is it in excellent, very good, good, fair or poor condition?
It was made sometime between 1969-92.
Crosman offers a free service to locate repair shops around the country that repair older Benjamin air guns. (Crosman owns Benjamin) See the link below
Today Both Benjamin and Sheridan air guns are owned by Crosman air gun company. Crosman offers a free service to locate speciality shops that repair old airguns that are antiques or out of warranty, see the link below.
If it's T123136 it was made in 1972
In order to give you an answer, you need to give it some sort of rating like Poor, Fair, Good, Very Good or Excellent condition without that information, I can not answer you. It was made between 1969 -1992
I want to know what the Utica marksman is also. I do know it is not long rifle. Will shoot shorts and longs.
347 is an integer. It can be written in fraction form as 347/1. As a percentage it is 100*347 = 34700%