XL750

I was taking a look at the 750 earlier and it looks pretty nice. I know there's a thread on here where guys are discussing loading for precision rifles on the 650. but I admit I didn't delve too deep into the thread. What's the consensus? Is the 650 good to go? How does the 650 handle dispensing powder, and what kind of variance are we talking about if I want, say, 39.36 grains of Reloder 16 or 31.8 grains of Varget?