Please check the link below for Browning Operations Manuals. Choose the Manual that matches the model of your gun. Instructions there will tell you how to disassemble.
Browning did not invent the 7mm
7mm Magnum and 300 Winchester Magnum
You will have to call Browning with the serial number.
Browning does not make a M70 semi auto 7mm nag
1966.
A call to Browning for a manual or a trip to a gunsmith is in order.
It is impossible to stop recoil.
Best left to a gunsmith.
I believe it was from 1962 onward.
300-800 USD
Good rifle
Good rifle. Browning does histor letters if you need more info.