Ordnance Disappearing after death.

I have played Halo since the day CE came out and have enjoyed the ride. Every little bit of it. As far as I’m concerned, Halo 4 matchmaking is absolutely amazing. I haven’t had this much fun since Halo 2. I must say though, the only thing that is frustrating is the fact that after receiving ordnance, if I die and head back, that ordnance is gone after less than 10 seconds in most cases. I really wish the disappearing rate of the ordnance after death was at least consistent whether it be gone completely after death or consistently 30 seconds or so, to give you a chance to grab that Binary rifle or whatever you got back after death. Sometimes I will find my weapon after 15 seconds or so, and other times I will spawn almost directly on top of where I just died to find that the weapon is gone, and none of my team mates have it. Does anyone else share this minor frustration? or am I just crazy?