I have a friend who is an amateur gunsmith and claims to have broken the bolt handle off a Rem M700--
dunno about that!!

My favorite action is the Win 70/various mauser variants with CRF where the bolt lug is not split/sectioned.Probably makes no difference but I like it that way.

My favorite non DG action is a Sako or Steyr. Not to crazy about the Remington safeties.

243 or 7x57?? Just depends on what game I'm shooting-
both are very handy calibers--