Yes. Faster twist the heavier the bullet you can use and still have it stabilize. Don't have a 1in12 but my 1in7 VZ seems to love 55gn vmax bullets.
If you're going to shoot wolves with that gun, go as heavy as you can - a good compromise would be a 60gr partition under a stiff load of varget
Actually reading a bunch of articles is way better than asking us dummies.
BTW an 80gr Berger VLD is the best for your 1:12 twist barrel.



























