Finally grabbed a few boxes of Armscor, CCI, and Federal from Sportsman's Warehouse, a box of Aguila from Bass Pro, and went to the range last Saturday. Shot 10 rounds of each at 25 and 100 yards. The 10-round groupings at 25 / 100 yards are: Federal 1.4/5.9", Aguila 0.63/4.3", CCI 1.0/3.2", Armscor 1.0/10.5". There was a flyer with Armscor at 100 yards. Excluding that flyer, Armscor shrinks to 1.0/5.3".
As far as reliability is concerned, there was one light strike with Armscor, which was ignited on second strike, while there was no light strike for other ammos.