The 7mm designation is a reference to the bore size, or diameter. In decimal size it means this rifle has a barrel groove diameter of .284 inch.
Define 7mm. Do you mean 7mm Mauser ( a little less than 30-06), or 7mm Magnum, (a bit more than 30-06)
Anywhere from $100 to a few thousand- depends on which 7mm rifle- and which 7mm cartridge- there ARE several different one.
In the firearms industry the bore of a 7mm rifle is .284in.
7mm generates more pressure.
NO!!
NO, NO, NO, NO!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! DO NOT ATTEMPT TO DO THIS!!!!!!!!!!!!!!!!!!!!!!!!!! Danger, danger, danger.
Mexico, 1887- the 7mm Mondragon rifle
The correct size of the bullet that fits the rifle.
That stands for the caliber of your firearm,and what ammo should be shot through it.
Gunsmith
No.
You will need to take it to a gunsmith to know for sure.