yamoon
Good point about not trying to reload a cartridge to make the rifle into something it wasn't intended to do.

     I'd like to ask the original poster a question. With all these responses can you honestly take an 8.15 into the woods with 100 % confidence ? I've taken maybe 6 deer with a 32/40 Ballard or Highwall and would do it again. Every one of those deer needed 1 shot. I've also held back on 30 or so shots because there wasn't a high chance of dropping them cleanly.

As I stated before, the average European deer is one half the size of the average North American Whitetail or Mule deer. Yes, you can kill a much larger animal with the 8.15 x 46R, but it is far from the ideal. If you limit the range to 100 yards or less, and make bullet design and placement paramount, then go forth, but there are still much more efficient cartridges for the task. As someone once said, don't take a knife to a gunfight, the outcome is generally less than stellar.

Seems like some need to get to know some European deer species....

I am well aware of the deer species native to Europe. It should be rather obvious that I don't feel the 8.15x46R is the best cartridge for any deer species native to Europe, from the small Roe deer to the much larger Red deer, and the even larger Moose (a member of the deer family)for that matter. Those of you who would disagree are more than welcome to your opinion, as am I. I have allowed, that within certain parameters, the cartridge in question(and rifle it is chambered in) could, and am sure, has been used to hunt for and killed untold numbers of the smaller deer species of Europe, but not for the larger deer species native to North America, from the Coues deer on up. There are exceptions to every rule, but there are rules in place for a reason. Some states have either caliber and or energy requirements for hunting big game. Sometimes it is prudent to read the entire post so that some do not have to repeat their opinion and considerations again and again. I will again(for the last time) state that the cartridge in question is not the best choice for the task in question.

MartiniBelgian  One does not need to be European to be aware of the most common deer species in that part of the world. That being said, I am one generation(thankfully)shy of being such.

Much better choice!!!

I am comforted to know that you do not make up the rules that govern what can or can not be used to hunt deer, or any large game in my state of residence. I have witnessed large bull moose dispatched with a 22 caliber rifle in northern B.C. albeit from a canoe alongside a swimming animal. Again, not the best choice.  I suppose I like to consider how I would feel if I were in the animals place. A sporting chance and the right tool for the job at hand.