Shotguns

Best left to a trained gunsmith

Would not recommend using a full choke or even a 20 gauge, 12s are much better

Place the shotgun bottom side laying on your shoulder, on safe or unloaded.

DDT

My ref book states 1872-1873.

duck, dove, turkey

35 years old

The manner in which you have asked your question almost guarantees it can not be answered with any degree of accuracy. You do not provide the gauge or type action. You need to give the overall condition, serial number, finish, sights, accessories, box, papers, any engraving, etc.. You might be in the 100-1000 USD and up range depending on specifics.

150-300

I think Sears did a long time ago....

Iver Johnson

Unscrew the current choke and screw in the required choke. Making sure to clean the threads before hand.

12 gauge is thicker than 20 gauge. The lower the gauge, the thicker the sheet metal or wire.

Big sells the 20inch 12gauge for 279.99 and 249.99 on sale. I found one on gunbroker for 200.00

well i own one that the date made is dec 11 1900 so its pretty old but i do not know how much its worth im lookin my self

I believe the distance used should be around 40 to 50 yards to pattern your shotgun.

In what condition?

Generally speaking, shotguns are classified by the inside diameter

of the barrell: 6, 8, 10, 12, 14, 16, 18, and 20 guage.

between 100 and 150$

No published sn data.

the shotgun takes a 2 3/4 shell

No public domain data available

$4000.00

1905 thru 1948

how old is my new England firearms 410 shotgun ser# NR-378884

both barrels are not choked