Last year I used a ruger American ranch in x39 with 123g. soft points. Light and compact to carry around the bush.
I dropped a 4 point white tail in two steps after shot was fired (double lung/heart).
However, the exit side front quarter was turned to jello and thus- unharvestable. I think it is from the characteristics of that round fragging.
Would I use it again?
Maybe
Does it work?
Sure.
Use a better bullet or a heavier bullet.
Most of the 123 grain type bullets are not really suitable, especially at ranges under 50 meters for Deer as they can be very frangible.
I use a 150 grain Speer SPFB Hot Core bullet, loaded to 2300fps in my Howa 1500, chambered for the 7.62x39.
This rifle, like most bolt action rifles in this chambering will shoot .308 in diameter bullets well.
I use this combo from blinds where the shots won't be past 150 meters and the last Deer taken with this load, through the top of the lungs, went about 15 wobbly yards before dropping.
The bullet went through and through.
This load is safe in my rifle. I wouldn't use it in an SKS
150 grain Speer SP Hot Core, 29.5gr H322 over CCI250 primers = 2280 fps average (safely) from my very strong Howa 1500