I've got a 41 from about 1985.
It likes CCI standard velocity - CCI Green Tag and Pistol Match shoot about the same size groups, maybe a bit tighter.
Wolf MT shoots about the same as Green Tag but the excessive greasy/waxy bullet lube makes it not worth it for me, too much bullet lube accumulates and causes malfunctions.
Eley Standard Pistol is a tad better than the others but may need some recoil spring tuning for reliability.
It likes CCI standard velocity - CCI Green Tag and Pistol Match shoot about the same size groups, maybe a bit tighter.
Wolf MT shoots about the same as Green Tag but the excessive greasy/waxy bullet lube makes it not worth it for me, too much bullet lube accumulates and causes malfunctions.
Eley Standard Pistol is a tad better than the others but may need some recoil spring tuning for reliability.
