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lympic Arms AR Rifle Range Tests

Model: K8, caliber 5.56mm, 20-inch barrel, 1:9-inch twist

Model: K16, caliber 6.8mm SPC, 16-inch barrel, 1:10-inch twist

Note: Remington cases were used for all 6.8mm handloads.

Note: Accuracy is the average of at least three, 3-shot groups at 100 yards from a bench rest. Velocities were measured with an Oehler M-35P chronograph with the front

For proper functioning, all AR rounds must be held to an cartridge overall length of 2.25 inches, such as these .25 WSSM handloads.

Here are just four of the over-achievers for which Olympic ARs are chambered (from left): the ubiquitous .223 Remington; the 6.8 SPC Remington; the hot new .300 Olympic Super Short Magnum; and its parent cartridge, the .25 Winchester Super Short Magnum.

Basically, about every load performed well, but here are a few favorites. Big game is the role of the .25 WSSM, and bullets weighing 100 grains and up are just the ticket, and all six shot well. The Nosler Partition bullet clocks almost 3,000 fps out of the .25 WSSM over 44.1 grains of IMR-4007SSC. Another winner is the 110-gr. Hornady InterBond with 46.3 grains of Reloder 19 at 2,824 fps.