First, you asked about the specific molds. According to the folks at Liberty the following are the molds they used.
The 175gr. comes out of a Saeco mold, catalog #307. The 155gr. comes out of an NEI mold, catalog #72.
The Lymans sound very close.
As to how many I go through, well so far this year I have purchased about 300 of the 175 grains and 200 of the 155 grain bullet. I haven't shot them all, but by the end of the year probably will have.
I have two sets of reduced load target rounds. The 155 grain one has slightly less than 16 grains of Alliant 2400 powder and the 175 grain load has a little over 31 grains of H-4895. The Alliant 2400 load is the most pleasing to shoot, but the H-4895 is a little more accurate.
I hadn't realized that most commercially cast bullets are for high volume typical rifle calibers like 30 cal (.308 plus a little or sealing), 7mm, or 6.5 mm and not much else. Historically most of the cast pistol bullets I have bought have either been 357/38 Cal or 45 Cal, so it shouldn't have surprised me.
If I could purchase or barter some from you or someone you know send me a private mail. Thanks again.