In 1980 it was necessary to hand load to be able to use the better bullets made by custom bullet companies such as Hornady, Nosler, Sierra, Speer, etc..
Otherwise, it was a rare rifle that would hold tight groups at +200 yards with factory ammo.

Now, if you don't really enjoy reloading, factory ammo can be bought with bullets from the custom companies that can hold tight groups at distance with some experimentation.

The more recent evolution of scope BDC reticles or scopes with dependable dialing abilities has canceled the need for extremely fast and flat shooting rounds for long range bullet drop guessing.

In 1980 feral hogs were not very common. Now, silencers and night vision scopes are big aids for much needed feral hog control.