Not with .308 sized cast bullets.  I'm close to you with a .3055 groove, .294 bore. Mine is a SIG made barrel and  I have shot my cast bullets sized .311, but found them more accurate when sized to .308.  I don't think the chamber neck is large enough to allow a case with a .314 sized bullet to chamber without banging on the handle.  Well, I guess mine would be, I just measured the neck ID on some Graf/PRVI cases that I know were full pressure, neck expanding loads, they're .315-.316.  I agree with you on .308 jacketed bullets with some K31s.  If I'd been dumb enough to jump in with near max jacketed loads that I've found online, rather than start low, work up, I imagine I'd have some pretty high pressure loads.  (Don't tell anyone, but I was that dumb once, had to pull down a bunch of rounds after getting pressure signs with the first two.)  Not rifle destroying high, but higher than I care to go.  I guess they're sorta like  US Krags, bore/groove dimensions can and do vary.  Ditto those 6.5 Swedish chambered Mausers and Krags, with the Krags generally running on the large size.