Mike, all the study I have done and people I have contacted who clearly are more informed than I have suggested that the .35 Remington has ballistics closer to the 9.3x72R than other rounds. The 9.3x72R is supposedly a lower pressure round than the .35 Remington. The rifle is clearly marked 9.3 and was likely made in Ferlach, Austria as it was proofed for nitro at the Ferlach proof house given the proof marks. I am unsure of the twist and even more unsure as to how to determine same. Thanks, Doug K