TOO:
The only way we learn is by experience. The following information is not meant as a flame, but as an attempt to answer your question.
The 7.62X39 mm cartridge is roughly the equivalent of a 30-30. First of all, it is
not a 400 yard deer cartridge. Secondly, any shot over 300 yards IMHO is quite risky, even with a suitable long range cartridge. Lots can happen between the time the trigger breaks and the bullet reaches its target, most of which is bad.
Plenty I'm sure.... but so would people and if it can't kill a person at 1000 meters then why have that on the sight?
The objective of military small arms fire is to kill
or wound the enemy. In fact, in theory, a wounded souldier actually removes two or more enemy troops to evacuate the wounded soldier from the battlefield.
Hunting ethics require the swift and humane dispatch of the game animal, which requires more precise marksmanship and perhaps a bit more terminal energy. The hunter should be absolutely sure that both he
and his rifle are capable of placing sufficient energy in the kill zone on the animal at which he is firing. Long range shooting requires much practice in order to be proficient.
Not sure what ammo you were using, but, according to Winchester, their 123 grain load trajectory is as follows:
100 yd. = +3.8"
150 yds= +3.1"
200 yds= 0
250 yds= -6.0"
300 yds= -15.4"
400 yds= -46.3"
500 yds= -98.4"
This would place the impact approximately 31" below your point of aim with your 100 yard error in range estimation.
If your aim was perfect, your shot
probably (hopefully) missed the animal completely. A .008" error in sight picture = approximately 1 moa or 4" at 400 yards just to give you an idea of how precise your aim must be at longer ranges.
Anyways, if I would of aimed even a little higher do you think I had any realistic chance of hitting it or is it time to think about changing the rifle I hunt with?
"Hitting" the animal is not the proper objective, humanely dispatching the animal should be the quest of all ethical hunters. As previously stated, even if your chances of getting a closer shot are nil, one should make the attempt to get closer, again, MHO. If you don't get to make the closer shot, hey, there is always tomorrow.
Regards,
hps