That's sure the prettiest R10 I've seen! So why would you prefer the R10 in particular for hunting over other R model Darnes?
I'm lefthanded, and I prefer not to have a bunch of money in purchase price on a gun I'm going to have to modify to fit me. The R10 above, with the pretty wood, was a back bored trade in back when I was in the business. I think I have $200-$300 total into the wood, restock, and the sling. I was there when the stock was whittled out to fit me.
My hunting would be considered rough hunting, and an extremely valuable gun would be out of place there. R10s are perfect for that.
All my R10s, at the moment, (3, two 12s and a 20) and my Halifax have ribs top and bottom. My V19 has just a raised rib top, and no under rib.
You can keep the V19 very sanitary between the barrels, but, It doesn't have a spot to mount a swivel for a sling. I have a brettele Darne (sling) on that gun.
The guns with both ribs typically have a nice balance forward feel. I actually prefer a swamped rib, but, don't own one at the moment. When Darne shopping, here, in the US, you will likely have to make some compromises to get something you can work with and use. You actually have to do that with most off the shelf guns, but, it can be acute with a Darne.
I measured the back bored R10, I didn't have that work done, but, somebody back in the day did, and it still has .060 minimum wall. It has a pimple bulge also. At the same time, most of the choke was removed from both tubes, I think it is cylinder /improved cylinder now. I have never worried too much about the flaws, as the guys at the factory didn't see anything to worry about, and I have used it pretty hard for the last 23 years.
Lots of pheasants and grouse fell to that gun.
Best,
Ted