Can you shoot 270 win in a 8mm Mauser?

No, you cannot shoot .270 Winchester ammunition in an 8mm Mauser firearm. The .270 Winchester has a different case size and bullet diameter compared to the 8mm Mauser, which is designed for 8x57mm Mauser cartridges. Attempting to fire the wrong caliber can be dangerous and could damage the firearm or cause injury. Always use the correct ammunition specified for your firearm.