OK, let me explain a bit more. In Iowa we can use straight wall pistol caliber, as of a couple of years ago for what used to be shotgun only. Last year I purchased a CVA hunter in 45/70 and was able to harvest a small doe. I mostly just sit (about all I can do any more) but like to "still hunt" on the very slow trip back to my sitting spots. I find the single shot not a good choice for this task as the shots, if they come are very short but must be taken expediently. I do carry a .45 colt revolver but just not a good enough, to trust my-self with it. So I thought, a Hi point carbine in 45 ACP or 40 SW may work for the trip back, while backpacking the 45-70 in for the sit. I have all the brass, dies and molds for these two calibers or I would consider the 10mm (don't want to by a bunch of brass I will likely just lose). Now that I have explained my thought process you can make your suggestions or just "flame away" which ever you choose.
Thanks Tony