This is as close as I can come to meeting your specs. My Zastava with Bushnell Elite 3200 and doesn't require any length alterations. The 'biggest' hurdle for me in using it on the game animal in question is my lovely lady doesn't find the concept of Bear appealing. There are quite a few tasty looking Black Bears here but I've been trying for the past 49 years and haven't made any headway yet in convincing her.]
I've not only had no luck in convincing the wife to eat black bear, I haven't had any luck in convincing myself to eat one. 25 years ago I used to shoot them, and no one here in NB expected you to actually eat one. Now it seems you have to eat it to justify shooting one. Yes, I have tried it, but would sooner eat most anything else. I have given some away for others to eat, and that seems to help ease the conscience. I'd shoot one or two this spring/fall if someone else would eat it.