Welcome to the forum.. its good to have you here. As for advise with that .45 caliber Knight.. sorry I am of little help. I almost bought the same rifle once, but passed on it. If I were you, I would ask my friends that shoot that rifle and caliber and see what is working for them. Another thing is, give Knight a call and ask them what shoots well. They are more then glad to help you out. Last is a place called Precision Bullet http://www.prbullet.com/pts.htm check their sight out as the rifle you have is one I think they tested and have made bullets to work in it.. Also there is a wealth of information there.