First, I'm with Bramble et al. The big double ought to be a stopper if you're after DG, and it should be open sighted, imo. The second ought to also be DG legal and ought to be QD scoped, with the scope on at all times unless your big double goes tits up.

The light double carried by the tracker should be unloaded, and in all likelyhood your PH will insist on it.

But the tracker can also be carying the ammo and hand you both when the light rifle with a scope is called for. I think carying two calibres of ammo on you is just asking for trouble. Even when carrying both softs and solids for the same rifle, care should be taken not to allow accidental exchange.

If you have time for a rifle switch, you will have time to load, just as with chambering a round in a bolt with an empty chamber but full magazine. And loading the double is a lot quieter to boot.

BTW, I was planning to take my A&S Farmars 375H&H double and my Thys 458wm double this next trip on the 27th, but the A&S isn't ready.

JPK