It was manufactured in 1978
You have given me all the information except the model. Sheridan has several different models at different prices
1974 see the link below
What is the age of a Sheridan c series 5mm 20cal rifle serial number 370862
Your rifle can be aged based on its serial number. Please see the link below.
No. a 177 is a 4.5mm pellet. A 5mm is a 20 cal pellet. A 5.5mm is a 22 cal pellet Don't try it in the wrong airgun.
I believe you are asking about a Sheridan .20 cal (5mm) air rifle. They started to make this rifle in 1949 and stopped in 1990 ( sheridan sliverstreak model ) During the 1990's the name changed to C9 sliverstreak and C9 bluestreak. The value is determined by the current condition of the rifle. You did not give any such information , therefor I can not answer you.
Sheridan air rifles who is owned by Crosman Sheridans are 5mm air rifles
The Sheridan Blue Streak air rifle uses a 5mm pellet. This is about .20 caliber- larger than the .177 pellet, smaller than the .22 pellet. I have been able to get these at Bass Pro Shop. There are also at least 3 lots of them for sale on Ebay right now. Only the 5mm/ .20 caliber pellets will work in your rifle- do not try to substitute anything else. P.S. Have had one for years. These are extremely good air rifles- very accurate, very powerful.
I have seen these sell from $50 to $600 depending on model and condition. Most are in the $90 - 100 range. Have a look at www.proxibid.com (sheridan pellet) and search the archives for 2008, it should give you a better idea what you gun is worth.
Sometime around 1980. In 1977 Benjamin bought out Sheridan and for a time they merged the names Benjamin/Sheridan.
Any place that permits hunting with firearms. BB guns are very difficult to use for hunting, due to lack of accuracy and power. However, I do squirrel hunt with a 5mm Sheridan pellet rifle. It is extremely accurate, and adequate for squirrels out to about 45 yards.