Mold Codes

[Squibload]

I recently acquired 2 older Lyman molds - a single cavity marked 375296 and a double cavity marked 375449 EM. What does the EM stand for? These molds seem to be virtually the same and suppossedly cast to about 245 grains. Both are flat nosed and I would guess they are for the 38/55. What is the difference? I have been using the lee mould that casts a similar bullet at about .379 and is accurate in my Marlin Model 1893. Do these 2 generally cast larger than .375 ?

I want to start casting for a .375 H&H and wonder if these 2 would work well? I am always afraid the flatnosed bullet will hang up coming out of the magazine (my .375 is a converted 1917 Enfield)

I would appreciate hearing from somebody that has experience with these 2 molds. Thanks: squibload

[stubshaft]

The suffix or Em is the cherry that was used to cut the mold. The ones to watch out for are the "U" = undersize.

[MikeS]

Those 2 letter codes specify the cherry used, and the machinist that cut the mould.

[smoked turkey]

I use the 375449 which is a GC FN at about 270 gr when sized/lubed/checked out of wheelweight alloy. This is for my particular mould. I use a factory rifle but mine feeds perfectly even though it has a generous meplat. I shot a very large doe with it this year and it worked as advertised for me.

[oneokie]

The 375296 samples I have seem to have a longer gc shank than the 375449.