The hunting trips might be a bit of a stretch.  You would have to be able to demonstrate that the purpose of the trip was business, as opposed to a pleasure trip where some business may have been discussed.  You could deduct the purchase of the guns, but you would have to allocate the cost according to the percentage business use and personal use.  For example, if buy a hunting rifle and use it 60% for business and 40% for hunting, then you could deduct 60% of the cost.