I don't own one, but friends seem to like the 35gr bullets. If memory serves me correctly there are two bullet diameters for the hornet. Old, old guns take something like a 1/1000" smaller bullet but modern guns use the standard .224.
The other complaint with the 22 hornet is neck stretching after one or two firings. May want to get a trimmer if you don't have one already.
When placing a trail camera don't just look for a well used trail. What you want to do is look for a freshly used trail off by itself that goes from a north facing ridge, thick forest, brushy knob or some other similar bedding area to a food source. Don't forget water sources. Especially in the summer months the deer need water so look for a good trail going down too a creek surrounded by thick cover and place the camera 100 yards up from the water source.
Scent control is very important...