You can stabilise 230 OTM bullets out of a1 in 10 twist. Mine shoots really well with this twist rate and bullet weight. If I re - barrel I'll probably have it in a 1 in 9 though .Varmint Hunter,
The 230 Match Hybrid and OTM require a 1-10" twist MINIMUM. Your 1-11" twist will probably result in an unstable bullet at the worst and at best a very compromised BC percentage. Try the 185 grain Juggernaut or the 200 grain Match Hybrid bullets. The 200 grain is about as heavy you can go with your twist rate.