We have arrived at .358" caliber! This 237gr is designed to maximize performance in the chamber of the 35 Whelen while equally excelling in some of the larger magnums and wildcats based on this caliber. A combination of a strong BC number, the ability to fully deploy to its maximum at very low impact velocities, and the right amount of heft to provide ample muzzle velocity coupled with deep penetration make this an ideal bullet in the Whelen for all situations out to midrange