Polska,
you swamp the fire with asinine questions.
The "solution in search of a problem" is your signature style.
Take this recent example - the reson why the market is not flooded with stainless .40+ bores, is because these bores are really only not over the top in Africa - for maybe two of the big five. Africa tends to be dry and warm and if not, there is always a camp/car close by and friendly folks with big white teeth to do a "bwanas" bidding with an oily rag - point is you do not need stainless there.
Second, the boltaction is for these circumstances second pick - behind the double rifle.
Mark that for your next go around - a stainless big bore double. With or without ejectors?
For the in-the water-hippo charge...
Thank me not, I am here to help a guy out.
The sad part is - having yourself a stainless bigbore bolt is so ridiculously easy, it is not worth starting a thread.
Go ahead and have one build. Start a thread on that.
Post pictures - show yourself a DOER rather than a TALKER and you will find the reactions to your posts change in kind.
Now go ahead and report me to the moderator, geez.