If the ground is of excellent standard and the grass is short then it should be fine. A TBM, appropriately loaded, routinely goes to sub-500m tarmac runways.
There is a video on youtube showing a Citation on grass, but if you look closely you can see the grass is like a billiard table.
My TB20 gets off in ~400m tarmac but the grass takeoff roll can be anything from 450m to 1000m depending on how bad it is. There is very little data out there on the performance drop for different types of aircraft and dry v. wet grass and short v. long grass etc.
If you have enough dosh to buy a TBM and you can control the strip, then you can do it.