It's a good round if you can find factory ammo for it or if you like to reload. Also finding cases could be a problem. It is based on the Rigby case. There are other more common rounds out there that will do just as good and the components to reload them are easier to find.
Its a great round perhaps a bit better than the 338rum or 338-378. 250gr bullets are usually the top end weight for the twist rate in most factory rifles. Reloading is a must if you want to shoot a lot and don't want to really rack up the $$$. Norma and Lapua make brass. Don't even bother with bullets like a partition, stick to designs more like the accubond.
Hornday probably makes the cheapest factory ammo, with the exception of HSM, but both are kind of hard to get right now due to the increase in the popularity of the cartridge.
Try to put your tree stand in a tree with plenty of background cover, keep the prevailing winds for that time of the year to your face, and take care of those pesky squeaks and creaks your stand may have developed while sitting in the shed. A good treestand lube can be made by heating petroleum jelly until it reaches a liquid form. Some hunters have reported success by including a cover scent in this mixture before applying it to their stands.