Has anyone had to sharpen their bloodrunners yet? I just got mine and I shot one into a foam block to see if they shoot just like the practice tips (they do exactly) and now it is a little dull. What is the best way to sharpen it?

i sharpen all of my broadheads on a diamond plate, you can find one at most bow shops

You will probably never get it as sharp as when new. Keep it for practice.

I would have agreed with you before I got this:
http://www.alaskabowhunting.com/Griz...m-P168C17.aspx

I get knives/BH's/removable BH blades scalpel sharp with this.

I've been using a tri-hone(three Arkansas stones) for fifteen years. You can find them at Cabelas and Bass Pro for about $25.
Broadhead blades are a little tricker; starting on a knife for practice may be a better idea.

Since I come from the stone age, pun intended, I checked what the newbie today has for information.

Of course, there is "you tube" with filmed demonstrations. Just key in "stone sharpening" for example. They clearly show the angle to hold the item that is being sharpened. Once you learn that, it takes only practice.

I use the American stones that use oil. Some foreign ones use water. And you can spend a ton of money, just to sharpen a few knives and blades. I go cheap; and Arkansas stone is still good after many, many decades.

And if I have a blade, it only needs sharpening to keep. That goes for pocket knives, hunting knives, fishing knives, broadheads, and the knife for the turkey on Thanksgiving.

For the latter, it always nice to show up the newbies and how easy our turkey cuts.

sanding paper, 1200 and 2000 grid, cheap and easy.
I would start off by trying a small pocket knife and looking at some youtube vids about convex sharpening.

Good trick to test the sharpness is build a small square out of wood and pull some elastic bands over so the middle is covered with the elastics mimicing the veins and arteries. Push your Bhead through and watch if the rubber bands get cut.
When they are pushed aside, your Bhead needs sharpening.

F

You can get them sharper than they are now and get them to a decent cutting edge.
But my advice is to buy 18 more blades for about $15 (depending where you look)
You just really cant get them as sharp as they come from the store. (my apologies to all braodhead sharpeners).