Sorry if I am late to the party. I had to dig up the email I got from Ruger a few years ago when I inquired about using my Rugged Surge suppressor on my mini 30. Here was Ruger’s reply
“Thank you for contacting Ruger Customer Service.
Your Customer Service Issue # is 10275839
We haven't done any testing with the Mini-14 or Mini-30 with 30 caliber sound suppressors "can". While it is possible to put a sound suppressor on our Mini-14 or Mini-30, they don't have the larger barrel diameter and shoulder like the 300 blackout version. Therefor if you choose to put a "can" on your rifle, there should be extreme care taken to ensure the "can's" bore truly lines up with the axis of the barrel bore to prevent a fired bullet from hitting baffles inside the "can" and destroying it.
Ruger Customer Service”
So, based on this, make sure you get an alignment rod for your suppressor. As for overgassed and back pressure, you are kind of on your own.