I don't recommend anything MM, just airing possibilities, in the event someone just has to have 7mm wsm brass..
But, bullets touching the lands is a very common fire forming technique, often used. Biggest issue I know of is if you have it too tight, try to unchamber the round, bullet sticks and powder gets all over your action. Not aware of any actions blown up by it being done properly, but anything is possible I guess.
The key is doing it right, correct powder, correct charge, etc. Avoid doughnuts, etc. Follow a proven process, no different than any other hand load. Do any hand load wrong and you can have a big bang followed by the sound of metal falling...