I am still new at this so go easy. I have been looking through the Internet trying to find reloading info on some bullets, but I have been unable to fine anything. Is it safe for me to simply choose a similar bullet for which reloading information is available and apply that to my unknown bullets? If I can find data on .308 dia, flat nose, jacketed, 150gr, flat base, brand 'Y' bullets, can I apply that reloading data to my .308 dia, flat nose, jacketed, 150gr, flat base, brand 'X' bullets?