I' m considering buying some lapua cases for my 7mm-08 but they only make 308 or 243 cases.

I' ve been told that 308 necks are too thick & can cause problems if necked down,someone else said that 243 necked up & your necks will be too thin & may crack,what do you think?

Has anyone resized 243 or 308 cases to 7mm-08 ,how well did it work out?

Thank you

Tumbo