Here are target load comparisons for 230gr FMJ at 50 vs 25yds. These should give you about the same POI using the same bullet. I trim these a bit for lead bullets.
Powders:
Long Line (i.e. 50yds)
4.2 grs VVN310
4.2 grs Clays
4.6 grs BE
4.8 grs of HTG
4.7 grs S1000
5.4 grs W231
4.8 grs WST
Short Line
4.2 grs HTG
3.8 grs Clays
4.0 grs BE
4.6 grs W231
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