Does any body have the newest edition seirra reloading manual?

Now the reason i ask this is because i have the 3rd edition manual. But i have notice that seirra has changed the coefficient on this bullet in the book it is .475 (the older book ) and on there website right now the bullet is .462 And i am going to order a very pricey scope with a bdc and i need to know the velocity ( i dont have a crono) of a 168 grain hollow point boat tail out of a 308 win and i am shooting 48 grains of h380 this would help me so much and would be greatly epriciated in my book it says the bullet is doing 2700 hundred feet per thanks again.