What brand of ammo have you found to be most accurate in the old ballard style pre-microgroove guns? All my guns are pre-WWII, many of them made before you could use High Speed shells in Marlins. I have found Aguila subsonic hollow point to be very accurate, with Remington target, subsonic HP, and Aguila solid target ammo to be close behind. CCI target seems ok, but the Aguila beats it in my old 39s. What non-highspeed ammo shoots the tightest group for you guys? Just curious.