For 124gr FMJ bullets (such as Zero Bullets) I have used 4.0 to 4.1gr Titegroup, 4.5 to 4.6gr Hodgdon Universal, and 4.8 to 4.9gr Winchester Super Field (WSF). I load them near maximum OAL that will feed in my CZ 85C and not rest against the rifling. All loads were about 130 power factor. The WSF loads were probably the most accurate but had a bit more recoil. The Titegroup loads had the lightest recoil but ran hotter (temperature wise) than the others.
All of these loads came from the Hodgdon Annual Manual and are about in the middle of max and minimum charges.
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