Generic data here....
Large case capacity isn't the problem with cast that some folks make it out to be.Sort if like the base of a CB down in the case below neck.
I've found,possibly dumb luck? that large capacity cases do a fine job with well fitted nose/throat loads,pert near irrespective of pressure and velocity.I mean,if you do any research at all the notion of "fit" keeps coming up.But,IMO .... the ball goes flat so to speak when discussing "why".Just sayin,get that fit right not only increases acc,it also widens the window of acceptance WRT purty much everything else CB'ly speaking.
Lube requirements go down,case capacity,alloy,pressure,powder viability and a cpl other salient points.So,it's not a broken record..... work on getting tuned,base to ogive consistency. Work on precision OAL cartridge length.Really snuggle that CB up into WHATEVER throat you got.
If I had to put a number on how hard a "jam" ,maybe 1 outta 10? rounds jacked up outta the mag(if we're looking at repeaters) are sticking,requiring a bit of bolt force to extract a loaded round.That % is part of the fun.Sayin,that's just another aspect of fit. We're looking for jam,perfect T.I.R.,then work on low chrono numbers and nice small round groups.