I have to admit to being thoroughly confused. Are you talking about tracking wounded game? The only unwounded game I have any experience with tracking in Africa were elephant and rhino and you don't have to worry about long range shots on either of them. If you're talking about wounded dangerous game, in my experience you will have no opportunity to do any rifle swapping, unless you're trying to stop something from getting away at long range, in which case you will want the scope already attached.

My rifle for tracking dangerous wounded game has been my .505 with Lyman 48 receiver sight. Can't be beat for snap shooting, in my opinion. My Krieghoff .458 has open sights and a Lyman 2 1/2X All American in claw mounts. Were I to use it again, I would probably exchange the scope for a 1.5-5X Leupold, like the one I will be using on my .500 NE Krieghoff now under construction, using a AKAH Schwenkmontage described above, which pivots around the front base after the catch on the rear base is released.

My .450 Watts on a pre-'64 Model 70 has a 2 1/2X Lyman Alaskan scope in a Griffin & Howe double lever side mount and a back up Lyman 48 receiver sight. I have never had a need to use the receiver sight.

My .577 is fitted with a 2 1/2X Noske, a hand made scope built in the '30's with 4-6" eye relief, for obvious reasons. It has a large tapered post reticle and is easily as fast as any kind of open sights in "catching aim".