What about 30 Cal luger hard cast lead Round Nose Level Base??????? 90 grain????? I shoot 125gr Truncated Flat point in my Browning Custom Mark III with no problems. Tightgroup powder. Novak Custom will shoot anything. The original bullets were round nose jacketed I believe so lead round nose should work. Just get the OAL correct...........The Hornady jacketed flat nose I think would be harder to get to shoot to find the right OAL.