Took the Model 63 to the range this morning and had a blast! I zeroed the rifle, and tested probably 10 different brands of .22 ammo. The best was cheap Mexican "Centurian" ammunition, shot a five shot group at 25 yards with all holes touching, a five leaf "Cloverleaf". This was from the prone position, not a rest:



Excellent trigger and sights, 100% reliability from all brands except CCI Mini Mags, which was surprising since most rifles like CCI. But, there was plenty it did like, Federal bulk box from Wal-Mart, Federal Auto Match, Winchester Dyna-Point, etc. The Mexican Centurian has been a real surprise, it is super accurate in all of my rifles and Ruger .22/45 pistol, and it is cheap at $22.00 a brick, that's $2.20 a box. I think it is made by Aguila. Ask your dealer to order some for you, you will be pleasantly surprised.