Barrel that has lands and grooves made by the barrel blank being hammered on a mandrel
I own a Greenough dimascase forged barrel shotgun. I'm not familar with the stampted lam.
Your Iver Johnson double barrel shotgun can be dated by the words hammer forged.This places production from 1936-1941.these were well made mass produced field grade shotguns of high quality.
Can be hammer forged, cut or drawn.
it should shoot 1inch or better three shot group at 100 yards. try different bullet weights.
What year is 16 gage single shot Springfield barrel and lug forged one piece inside barrel wwdt
Remington uses "hammer forged" rifled barrels on all production rifles. Their custom shop uses mostly "button rifled" barrels unless the customer specifies a barrel made by a custom barrel maker who uses the "cut-rifled" process to install rifling into a barrel blank.
Usually on the right side at the rear of the barrel, but CAN be in other places- one type has the hammer UNDER the barrel, striking UP.
Originally by drawing a cutting tool through the bore that cut one groove at a time. Now it may be done with a rifling button (made of VERY hard metal) that is pulled through the barrel, cutting all the grooves in one pass. Barrels can also be hammer forged- a rod with all of the grooves on it is placed in a heated barrel, and the barrel hammered to shrink it onto the rod- which, when the barrel cools, is removed.
Iver Johnson is most often associated with the HERCULES trade name. sales@countrygunsmith.net *If that statement marked on the gun actually says "barrel and lug forged in one piece" it is a Stevens. If it says "barrel and lug forged in one" (exactly the same except no "piece") it is by Iver Johnson Arms and Cycle Works.
Frame barrel hammer
1864-1935
After shooting the first shot, just pull the hammer back and fire again. There is a little piece on the hammer that swaps to the other barrel between every pull of the hammer.