SKB,
A bullet that heavy would be OK for more modern 9.3s (9.3X57{M88}/62/64/74, etc.) but the standard bullet for the 9.3x72R N is the 193 grain Express type bullet. Formally other bullets were used such as 185 or 200 grain in jacketed bullets or in black powder rifles 250/260/280 grain lead (note, 9.3 jacketed bullets are too hard for 9.3x72R).

HalfaDouble,
The Lyman 366408 was one of the most common cast bullets for 9.3x72R and it served many people, especially those with black powder rifles. Many with nitro proofed rifles for lighter bullets were disappointed with this bullet's accuracy. This problem was often addressed by facing off the mold until it drops about 200 grain bullets. My favorite is the 208 grain H&G 512c, but this is no longer available. The rifles with .358-.359" barrels can use the 185-200 grain 35 Remington bullets or any of the various jacketed or lead pistol bullets. For slightly larger than .358 barrels, there was an old Lyman mold for 38 bullets thar dropped from the mold as 173 grain SWC .362" and would be useable in a great many rifles.

Mike