7.62x39 for deer, but no AK kill.........yet
I hunt the x39 ctg quite a bit for deer, as does bamaboy. No kills with an AK, but in a pair of Rugers, a Mk77-II and a Mini-30, both w/ low powered scopes. I feel quite comfortable in advising that the x39 is entirely suitable for whitetails in the 150 yd range from those rifles. We typically use a handload topped w/ the now defunct Sierra 135 SSP bullet, which was a dandy. The comparison to .30-30 is apt. We get pass-throughs and good expansion, have not lost a deer, and some are DRT. The biggest buck of I will likely ever kill was taken w/ the Ruger 77 in x39, a monster 5-1/2 year old approaching 200 lbs with a dandy rack. Heart shot at 19 yds, he ran about 50. Wish I'd had my bow that morning ..sort of.
I've carried an AK into a deer stand exactly once, just to say I had. It was basically a bow tree, shots would have been well under 50, and I'm sure it would have sufficed, but no opportunity. With the 5 rd box, it was not too clunky, and had I dropped the rifle from the tree, it would not have bothered me (or it)! I used the Brown Bear 125 SP round, which is alleged to actually perform like a true SP. I would avoid the assorted JHP bulk ammo for deer. I have not tried any domestic x39 ammo, or my reloads in the AK. The Tapco trigger I installed is actually very useable and helps in shooting mine well a good deal.
The sights on an AK give my 50+ eyes fits, and I would never hunt w/ it in the afternoons, as the PM light (lack there of) would prove an obstacle. A dot or scout scope would help, but I do not want to make the investment. An optic on an AK is sort of a turn off for me as well.
For some reason, zeroed at 100, my AK prints pretty high at 50, enough that I need to remember to draw a "fine" bead. I suppose it is related to the high sight plane of the design . One hundred yard 5 rd groups are pretty sloppy, about 6 MOA, but adequate for the stands and shots I would ever take with the AK.
The M77 is a different story, 1.5 MOA and the Mini is about 3 MOA
with the best ammo.