.218 ICL Bobcat (P.O. Ackley Data)

.218 ICL Bobcat (P.O. Ackley Data)

The .218 ICL Bobcat is a wildcat cartridge derived from the .218 Bee with performance enhancements characteristic of the ICL (“Increased Case Load”) series. Developed during the era of experimental wildcats, this version was refined by handloaders inspired by P. O. Ackley’s principles—namely, increasing shoulder angle, reducing body taper, and optimizing case capacity to push ballistics without overburdening the .218 Bee’s original geometry. Its overall design aims to deliver higher velocities, flatter trajectories, and improved efficiency for varmint hunting and target work.

The Bobcat typically uses bullets in the 40-grain class to exploit the improved case area. With well-chosen powders—fast to moderate burn rates—it is capable of moving a 40-grain projectile in the realm of **2,675 to 3,125 feet per second** under favorable rifle and barrel conditions. These performance figures place it notably above standard .218 Bee loads, yet still maintain manageable recoil and acceptable barrel life when developed carefully.

Reloading the .218 ICL Bobcat demands careful attention: case forming from standard .218 Bee brass must maintain concentricity and consistent neck walls; shoulder geometry must be precise to avoid feeding or chambering issues; and choice of primers, bullet seating depth, and overall case prep are all more critical than average wildcat loads due to its higher pressures and velocity potential. Accurate powders and match-grade components yield the best group consistency, particularly at 100 to 200 yards.

While not widely produced or commercially standardized, the Bobcat remains respected among wildcat enthusiasts for its performance envelope. In practical use, shooters report excellent terminal performance on small game, with lighter bullets offering rapid expansion and heavier ones better stability in wind. The Bobcat is often used in bolt-action rifles that can safely handle its more aggressive loads.

Source: Wolfe Publishing