In my book, Jacketed Performance with Cast Bullets I have a chapter which will answer your question fully, with a formula which calculates the wound diameter created by a flat nose at a given speed.
To be sure of maximum effective range, using my formula, which gives a relitive number to the 'displacement velocity' of tissue spray, which causes the wound by any bullet, if the wound is larger than the bullet.
I cannot do justice the the topic in this forum. You'll have to read my book, which you'll find listed in my catalog.
