Fiocchi's Shooting Dynamics 180-grain truncated-cone FMJ is the fastest ball load in this group at 1,250 fps and 624 ft-lbs. Power factor is 225, 60 over the 165 major floor. The truncated cone means a flat nose; nothing else changes. It leaves the muzzle supersonic but is down to 1,115 fps by 50 yards, just under the 1,125 fps sound barrier. From a 25-yard zero the bullet is 1.1 inches low at 50 yards and 8.6 inches low at 100, where it still carries 1,022 fps and 418 ft-lbs. The brass case is reloadable.

Every other ball load here sits below it. Ammo Inc 180-grain TMJ is the nearest, 60 fps and 58 ft-lbs behind, with about 9 percent less recoil energy and 1.0 inch more drop at 100 yards. DoubleTap Target 180-grain trails by 65 fps and 63 ft-lbs, and HSM Training 180-grain by 100 fps and 95 ft-lbs. PMC Bronze 200-grain is 200 fps slower yet produces recoil energy only about 9 percent below the Fiocchi; its bullet drops 3.4 inches more at 100 yards. Armscor 180-grain is the floor of the group at 1,008 fps, 242 fps and 218 ft-lbs back, and the Fiocchi produces about 44 percent more recoil energy than it.

Buy this 10mm Auto load for practice at full 10mm power, or as a competition ball load with the widest major margin in the group. If your carry load is a standard-pressure hollow point such as Remington Golden Saber 180-grain, which runs 1,150 fps with about 13 percent less recoil energy than the Fiocchi, HSM Training 180-grain shares the Golden Saber's 1,150 fps and is the closer practice match. Shooters who find full-power 10mm tiring should start with Armscor 180-grain, which produces about 31 percent less recoil energy in the same pistol.