Again, on my used Excalibur x-bow shooting stock carbon express bolts (no fancy fletchings here) and 100 grain practice tips I've not been blown away with my accuracy. I'll be the first to admit, I'm NOT a great marksman, but I expected to get better accuracy with a crossbow than I do with my vertical bow. In addition, I'm shooting from the standing position, wrapping the sling around my arm/elbow in a "ching-sling" fashion. Groups from 20 and 30 yards will all kill a deer, but I was expecting that from 20 yards I'd have just about all of my bolts touching and be in danger of a shaft shot...what is the magic combination that I'm missing to greatly increase my accuracy?