Let it lie! Why not have another good debate?
If you are on your hands & knees crawling through a sitka spruce plantation in the dark, & come across your wounded beast,a pistol would be much easier to fire the follow up shot with.
I'd have one if I thought it would be straight forward applying.
I see on gun trader there's a SIG & a H&K for sale, either on section 5 or for humane dispatch, I'm not saying you have to flash these things about in front of your stalking mates, or wear a swish holster - Pack the gun away in your roe sack & be ready to end a deer's suffering when needed.