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A main attribute of the .25 caliber is its ability to shoot heavier bullets than a 6mm. Here, the 120-gr. Speer Grand Slam cooks along at 2,755 fps with 44.1 grains of H-4350. This makes a terrific bigger big game load.

All in all, it is hard not to find a particular model and caliber set up in the Olympic Arms AR line that isn’t appealing. They are competitively priced, functionally reliable, very accurate, and they accept a wide range of handloads without a whimper. In the crowded AR market, collectively they represent solid value.

Model: K16, caliber 5.56mm, 16-inch barrel, 1:9-inch twist

Note: Federal cases were used for all 5.56mm handloads.

Model K8-MAG, caliber .25 WSSM, 24-inch barrel, 1:10-inch twist

Note: Reformed Winchester cases were used for all .25 WSSM handloads.

screen 12 feet from the guns’ muzzle. Abbreviations: SD, standard deviation; OAL, cartridge overall length; F, Federal; R-P, Remington-Peters; BT, boattail; HP, hollow point.

Allyn Tedmon

BY CLARENCE ANDERSON