I am building a 7mm Mashburn Super Mag on an 03-A3 and wondering what follower & spring I should consider?

Winchester Model 70 follower for 300 WM & Brownells Mauser spring?

Anyone?

I can't speak directly to your conversion, but is there any reason why a forged 03 follower wouldn't work? I'm sure that any spring Brownells offers would function just fine.