Some of the Gun World and others are mixed in. As you said, a lot of good stuff in there including P. O. Ackley. And yes; more how to do than where to buy.
Downsizing and came across about 80 old magazines from around 1966 through mid 70s. About half are American Rifleman with most of the rest being Shooting Times and Guns & Ammo. The pre 68 ones have some ads that will bring back memories to us seasoned citizens.