The 243 win is a much more popular cartridge than the 6mm rem because so many people don't realize how inferior it actually is to the 6mm rem.imho the 243 suffers from bad case design , short neck & to body tapper ,now I realise big green messed up the twist right from the get go & that Winchester hit a home run by necking down the 308 especially when you consider brass availably but the 6mm out pefourms the 243 by 100-150 fps with any given bullet ,big green doesn't chamber their 6mm in any rifles any more so it's another fine example of Remington's marketing folley that did so well .hell no wonder they just went under twist , duh !!! Just my 2 cents
