OK, so my Sierra manual shows the same powders and load data for a given bullet weight regardless of whether the bullet is frangible or not. However my Lee manual splits them up, e.g. it list about 25 powders for 55gr jacketed but only 12 for frangible.
Does it make any difference whether the bullets are frangible or not? A friend asked for some load data for 65gr 243 frangible but my Lee book doesn't have any information for 243 frangible. Can I just use the data for 65gr FMJ?