I loved the grim reaper heads (100g) when I had my Barnett. Unfortunately it was like pulling teeth to get replacement blades where I live. Now that I am shooting a Excalibur Matrix I am using the Rage 125g. The only problem with them is after I kill a deer 90% of the time the head is trashed. With the faster speeds I like the expandable heads and if I could find the blades I'd go back to the reapers in (125g) but that is what my bolts call for. Check out
www.wyverncreations.com . They can be a big help