I see that-

Well, unfortunately I don't nor will I ever have any experience with a 30" draw length [:'(]

IIRC, There's a guy over on the ELite forums shooting the XLR at 32" draw 70 pounds or so shooting .300 spine Rhinos- around 30" arrow length . XLR @32" is same power stroke (8" brace) as Xforce or 82nd @ 30" (6" brace). So I'd say it alot of it "depends"- how much FOC? How much fletching weight on the back end to stiffen spine? etc.

Personally, at those speeds and draws, I wouldn't be bothering with fixed blades for deer - I'd be shooting a 3" cut 4 blade mech!