I'm guessing here but I assume you are talking about shooting it in a rifle barrel. Not sure what you will using them for but for hunting whitetails I have been loading for my pistol and my buddies pistol Nosler 125grn Ballistic Tips. I shoot 125 grn and 150grn Ballistic tips in my .30 Herrett 21" barrel and they work good and they are just a little slower than the 30-30.
Mike