Diago, for me LR/deer and 6mm don't go together. You run out of oomph pretty quick.
If shots are kept inside 400yds on deer, then 243Win would be my first choice. 105gr Amax or SST would be my bullets of choice. There are certainly no shortage of factory rifles available.
If you are going wildcat, then 6-06, 243AI, 6mm Rem reg/AI would be excellent choices. Ranges should still be kept moderate, maybe 500yds if I could guarantee good shot placement.
For LR varminting, this combo would go as far as you can shoot. I am just a little conservative when it comes to deer, especially the ones we have up here in Canada. I would want more bullet weight and larger cal.
Jerry