Well, I'd like a reasonably priced set of matched dueling pistols, originals, of course. No, I don't plan to meet an opponent in a misty field a first light. I just want them despite the fact that I'm old enough, now, that I couldn't own them long enough to realize any significant investment value.
I have a lot of hunting experience in Africa and other places. Maybe you have, too. If so, you'll know that a double rifle in the hands of a client is entirely unnecessary. You will not be standing alone in the thick jess facing the charge of an angry buffalo. You may stand there, alright, but rarely there will be a charge. BUT if the buffalo does come, you fire your first round. Nine times out of ten a hit at 75 feet does not kill the beast, instantly. It is the responsibility of the PH's [usually 2 of them on dangerous game] to entirely destroy the wounded buffalo. To do otherwise is totally unprofessional. There is none of this junk that I've heard so often from inexperienced hunters when they supposedly tell the PH, "You bleed it and I'm not paying for it." Therefore, nowadays, a double rifle isn't necessary on a hunt. Better to use a REAL stopper, in my case a Weatherby 416 magnum with 400 grain solid slugs, but you need to be able to handle the recoil.
On the other hand, what do I know? I've only shot 4 bull buffalo and there was no real drama on any of them. As a matter of fact, I can recall no real drama on any African animal except for two lionesses who charged full tilt, but were deflected when I blew dirt in their eyes by shooting in front of them. My rifle, with its mauser action was entirely adequate, for the task. Now, the potential is there, of course. A friend captured a leopard a couple of days before I arrived. He held it in a 50 x 50 foot pen. I waited until the leopard got to the far side of the pen. I crouched down like I was carrying a double-barreled shotgun in my lap. The leopard charged every time I tried this. I tried it 4 or 5 times and the leopard beat me every time. I didn't have time to lift my imaginary shotgun to my shoulder. If it hadn't been for the pen, he would have opened me like a sieve. Note that I would have been just as lacerated if I'd carried a double-barreled rifle or assegai.