I'm new to cast bullets, so I need all the help I can get.....I have a 375x 2 1/2 FNE and I want to try some hard cast slugs in it, so my question is.....with a .375 bore size, is a .375 projectile too small? or what would be the correct bullet diameter for this bore?
My next question is....with powder coated hard cast projectiles, do they need lube? These are all in rifles not pistols

Roger