David,
Years ago (many) folks shooting a 1911 thought that was then end of the power spectrum.

Now,compared to today's hand cannons,it pretty much feels like a 22 short.

Now as for the 45-70 in a derringer,I will pass on trying that one out for sure.

I remember years ago when the 44 magnums first came out,some folks went and bought one,only to put in on the used gun shelf a short time later with a half box of ammo.

Wayne