Sam i meant that we only have one manufacturer which is providing us with propellant. KansasSasquatch thank you for the useful info!! I own a Musgrave 7x64. Is a company in South africa. but yes its a mauser action. I sure as hell not gonna test the first bunch i load in my rifle, will build myself a mechanism to set off a few to see how the ms200 react in the brass. I can highly recommend the caliber above a .270! and as for the 7mm projectiles i love having high BC values. As far as I know its only Tikka that still develop a 7x64 caliber.