These bullets have been designed for the 338 Winchester Magnum cartridge. Controlled, but reliable expansion and deep penetration are assured by a heavy double-tapered jacket and hard core. The Sierra Spitzer Boat Tail shape assures a flat trajectory, minimum wind sensitivity and precise accuracy at long range for both bullets. The 215 grain #2610 has been designed as a higher-velocity, lighter bullet for the 338 Winchester Magnum, although it is considered light for the 340 Weatherby Magnum. This bullet is suitable for medium through elk-sized game. The #2610 bullet will reliably withstand 338 Winchester Magnum velocities. Shooters using the 338-06 or similar cartridge must keep loads with the 215 grain #2610 bullet near maximum velocity levels for reliable expansion. Hunting rifles have shown extraordinary accuracy with this bullet in spite of the robust recoil of maximum loads.