What is your altitude, and the most common altitude at which you will be shooting. This can make a considerable difference in stability. What I can easily stabilize at my hunting altitude of 9000+ feet of elevation, others can seriously struggle (or outright fail) to stabilize at sea level.
If you have not already played around with this, Berger has a great resource available on their website that will allow you to do quite a bit of predictive analysis on bullets of your choosing. Link:
https://bergerbullets.com/twist-rate-calculator/
One additional advantage to Berger's calculator is that because it is their resource, it is pre-loaded with all of their companies offerings. This should benefit you, as you asked about the Bergers in particular. You can also add your own data to calculate other non-Bergers, as well by entering specific data from the bullets that you'd like to try.
For the short answer in your twist, you should be able to stabilize the 180 gr (and below) projectiles quite well. Many in the shooting community feel that some Euro/Nordic rifle manufacturers have chosen poorly in putting 1-11 twists on their 30 cals. I generally love rifles from these manufacturers, but strongly agree that they need to update their twist rates to common heavy-for-caliber offerings.
Shoot what shoots well in your gun. You will certainly discover what works for you in your given circumstance. Then, when possible - re-barrel your rifle to exactly the length, chamber, and twist that
you want!
Hope this helps.
Edit - I just re-read your original post, and see that you are already familiar with their twist rate calculator?
