I bought the Excalibur bulldog 400 last year and I have lots of time to hunt in the fall/winter, so it sits cocked for usually 7 hours ish a day around for a good chunk of a month. Never had any issues, in fact nothing but praise. This thing is insanely powerful, buck two days ago was a double lung, and it broke a rib on each side and buried so deep in the ground i never found it again despite bringing a heavy rake the next day.