Hi everyone! I normally hangout out at the Marlin Owners Forum but need some advice on a issue I have and I think you folks may be the place to ask. I have a 1894 Winchester made in 1906 in 38-55. I've slugged the barrel and it came out as .377. After loading trying a variety of different bullet types I've found it will load only those bullets with a smaller Meplat such as from Lyman molds 375248 and 375449. Long or short Starline brass makes no difference. I have these molds so it's no problem casting for them. My question is has anyone experienced this and are there other molds either from Lyman or others that are comparable to these. Thanks!