Since Carl Gustaf was over loaded with orders for the Swede mausers they sent the Swedish steel to Germany so oberndorf could manufacture the Swede mausers too.
My orginal 1907 Carl Gustaf 65mm 29" barreled Swedish Mauser will shoot 1 1/2" groups at 100yds with no scope. Using sellier & bellot 131 gr sp ammo. Since these are zeroed in at 200yds I bought the higher front sight and filed it down till I have a 100yd zero.

I'm working on a 1900 oberndorf cut down m96 6.5mm Mauser. Bubba cut the barrel to 22". I plan on scoping it.