You can never own too many!!! I will tell you that I have 42 ammo cans full of ammo 20/50cal 18/30cal & 4/20mm, for the guns I own! I need Ins just for the cost of the ammo I own!! I have it logged in and priced out you would not believe how much money I have in ammo alone!!
You can't shoot without ammo.
While I don't have that much, the amount of ammo I own is much more comparable to yours than my firearms count...I only own around 25 firearms...I believe you bought that in a day once.
BTW, wanna sell me some .308? I'm running low.