Hi, I'm planning a buffalo hunt for next year and I'll be using a .375 double which is currently regulated for 300 grain bullets. I have never shot 350 grain bullets through it but thought about trying them thinking that the larger bullet couldn't hurt. Are there any down sides to using the larger grain bullets if the grouping is acceptable? I suspect the regulation may prove to be an issue and I'm not willing to re-regulate the rifle away from the 300 grain bullets. My plan would be to use a soft point for the first shot followed up by a FMJ. Completely new to hunting buffalo so all advice is welcomed.