Some crossbows don't shoot fixed that well. Also the arrow you're using will make a difference. I have a Parker Buckbuster and Stryker 350. I was using the cheaper Easton Power Bolt with 125 grain Muzzies. They weren't bad and I killed several deer with them but still not really consistant. 2 would be close and 2 would be off. I purchased some Gold Tip Lazer III pros and there seems to be a big difference. The Stryker is shooting them great and the Parker is nearly as good. I've had several people say they would stay with expendables on crossbows and the spitfire was there choice. I like Muzzies and had like 30 of the 125s so didn't really want to spend more money on others. But with the results I got with the new arrows I'll be happy to stay with them.