I shoot both 185 gr. LSWCs and 230 gr. LRNs in my P345 on top of 4.7 grains of Titegroup. It's a light load for the 185s, warm for the 230s. No feeding issues. I leave a slight shoulder on the 185s (nose lengths can vary) and 1.26 inches on the 230s. Standard LP primers.
Check the Hodgdon web site for more load data specifics.