I've never been a fan of the .30 cal due to it's over penetrative nature and accuracy concerns. I had some .30 (7.62x25) ammo lying around which I wanted to get rid off and thought to take my Zastava M57 for some target shooting. I was quite surprised at the results. I fired about a 100 rounds all at 15M, targets below.
The first two targets were shot casually with me not expecting much but with encouraging results I started to shoot it more carefully to see what max I could get from it.
The results were beyond my wildest expectations. I never thought the 7.62x25 caliber could be so decently accurate. A 2 / 2.5 inch group at 15 M is excellent specially when taking into account human error.