I'll try to keep this concise and list only relevant details.
I am interested in buying a Cimarron 1885 High Wall in 38-55.
SKU: CA885
Cimarron has a data chart for their bore diameters straight from Uberti (attachment 1) which lists the bore diameter at .379".
I plan on getting a mold to cast my own bullets, however I'm not sure which mold I should look at. I've read reviews that Lee's 379-250-RF is mislabeled and will only cast .375-.377 size bullets.
I'm leaning more toward Lyman, but even their mold only casts up to .379". Ideally, I'd like to not paper patch or gas check and of my ammo just as a matter of preference.
I usually get starline brass and read their article on why they started offering two different lengths of 38-55. (Attachments 2 and 3)
Long story short, I'm not sure which combination of brass, bullet mold, and any other extra things I'll need for this. I have some level of confidence in Uberti's data, but I can already hear everyone telling me to slug my barrel to be sure. Outside of that, does anyone have any experience they can say I'll be better off going one way or any of the others?