Hi Hommer

As you see from Von Gruff’s info and photo, his 350gr cast has a .190” meplat and quite rounded ogive and my 400gr has a .205” meplat with a more conventional ogive.

The concern I would have with the .375” meplat and “Keith” type profile would be getting proper feed from the magazine particularly if using a CF Mauser, where single loading is not really a great option.

Keep in mind also that the top punch for a lub/sizer such as the Lyman 450 would need to match or come close to the bullet nose profile. The top punch in my 450 just handles Von Gruff’s 350gr cast profile but I don’t think it would do a Keith profile. Obviously not a major to make up a punch that would though.

My cast bullets are sized .425” in the Lyman 450.

Cheers