+1 on what fredj338 said.
.
My simple rule, for semi-automatic pistol cartridges, no matter what bullet you're loading, or in what pistol:
1)- Seat the bullet for the longest COAL"
that,
2)- will still pass the plunk test in the barrel/chamber of the pistol it will be shot in,
and,
3)- still feed properly in your magazine,
but
4)- does not exceed the SAAMI max. COAL" for that cartridge.
.
Record that reading (COAL") for future use with that exact bullet & forego the above next time you reload for it when using an appropriate powder charge.
.