If your going to poach the water should be between 175-180. Any higher and the fat will melt out. They do make SS/Bologna poaching casings, they are double cased. They are high barrier type.
Here.
http://www.sausagemaker.com/2810360mm238redhighbarriercasings.aspx
We all do things different, what one likes another does not. I dont do much poaching. I like full smoker style. You will be fine poaching SS or Bologna but you will need to use non edible synthetic or collagen casings. Natural casings poach well. Cloth bags do not poach well as like edible collagen.
You want a real treat?
Use some natural beef middles for your SS/Bologna/Salami.
@ Joe
I did get your message...TY
Yes you can use your oven at 170-180 (electric ovens work better here on this application)