This post has been on the board for a while, so people may not be reading it. I don't think people are ignoring you.
Personally, I think that the buy it now price is a little high, but that's just me. I know that there have been guns going for stupid high prices. Your gun is very nice, but not quite perfect. I see a little spot on the cylinder. The seller did a nice job with the photos, so there shouldn't be any surprises.
People will assume that your reserve is close to the buy it now price. If that is actually the case, no problem. I often see nice guns with no bidders because the buy it now price is high, so people assume the reserve is equally high.
You could let the auction run to the end at the current price and relist it at a lower price if it doesn't sell. You could then set the opening bid at the lowest price that you would accept and skip the reserve price.
Good luck with it. It looks like a very nice gun.