It had better be a very accurate M1 Carbine at 350 yards as at that distance the chronograph is merely a target. I've shot my chronograph once, I'll not be doing that again. And too the .30 Carbine fired about the biggest bullet the case can handle due to case capacity. Due to international treaty it was designed for full metal jacketed bullets, as soft points or hollow points simply cannot be used by the military. Period. Also taking into consideration that the .30 Carbine was designed as a replacement for the pistol and no pistol round of similar size and weight works worth spit at ranges greater than 300 yards.