I have a Darton 45mx and have used it successfully for years. I've had others and still hunt with the Darton. A little heavy and long butI shoot finger tip so the extraweight helps stabilize my shots, better groups. With a #70 lb draw, a mid weight arrow/ broadhead setup and it'll kill anything in the woods. I have added a whisker bisquitand am quite pleased with the results. I will be using it for elk this year. The 45mx was seed to the viper so i imagine it performs justas well or better. Wouldn't hurt to restring it and have it checked for stress, thenshoot withthe bow for a while. Remember, Its not the bow, Its the shooter.