I differ in that I don't feel the 7.62 x 39 is very well suited for deer huntning. The rifles are not particularly accurate, they are heavy for caliber, and to me, unwieldy. The sights are not up to hunting standards. There is almost no decent hunting ammunition for this cartridge. The so called hollow points don't help at all.
If you replaced the sights, blocked the magazine to 5 rounds, hand loaded decent ammunition, and took off the bayonet, and silenced the banging parts, then it might work.
Thats a heck of a lot of work for no improvment over the 30/30, IMHO.