I started using a basic plex reticle for both range-finding and shooting at what were then considered pretty long ranges back in the mid-1980's, long before laser range-finders, multi-point reticles and turret-twisting became common. A plex can work very well on big game out to 500 yards, or even farther, but only if you understand the underlying principles.

“Montana seems to me to be what a small boy would think Texas is like from hearing Texans.”
John Steinbeck