RE: tight chambering handloads
I usually refrain from bashing products, especially when I have no experience with them. But, I hear of too many problems with Lee products. I personally only use RCBS or Redding products. I know a lot of people have really good experience with Lee but you hear or read several times a year of people having problems with reloading, the one constant it seems is Lee. I just think that its more than coincedence.
I would bet that a set of RCBS dies would solve your problem.