Could you post a pic of your "Pivot hammer Knight"? I need to go to a toy store and find a toy gun to steal the hammer from and then tape it to my inline stock so my Whites will be legal
Bullets, I've had great service with No Excuse bullets for years. In my 50's I use the 495 grain bullet and 95 grains of T7 ffg, the 460 grainer would work well to for both elk and deer. Bull Shop makes great bullets too I am told, but if you want to try some you need to get your order in soon because he will be shutting down in September for the winter.
RWS 1075+ are the cap of choice.
Don't forget to post a pic of your gun